Diaphragm sentence example

diaphragm
  • These blocks were fastened to a diaphragm of wood.
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  • The anterior surface is in contact with the diaphragm and the anterior abdominal wall.
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  • The right surface of the liver is covered with peritoneum and is in contact with the diaphragm, outside which are the pleura and lower ribs.
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  • (2) The Castner-Kellner process employs no diaphragm, but a mercurial cathode.
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  • In this construction the lenses are much closer together and the diaphragm for the eye is much farther from the lenses than in Ramsden's eye-piece.
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  • (5) The Hargreaves-Bird process avoids certain drawbacks attached to other processes, by employing a wire diaphragm and converting the caustic soda as it issues on the other side of this, by means of carbon dioxide, into a mixture of sodium carbonate and bicarbonate, which separates out in the solid state.
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  • In the diaphragm valve a thin piece of metal is fixed to an outlet from the boiler, and when a moderate pressure is exceeded this gives way, allowing the water and steam to escape.
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  • The intermediate layer of the salt solution, floating over the caustic soda solution, plays the part of a diaphragm, by preventing the chlorine evolved in the bell from acting on the sodium hydrate formed outside, and this solution offers much less resistance to the electric current than the ordinary diaphragms. This process therefore consumes less power than most others.
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  • Sodium hypochlorite can be prepared by the electrolysis of brine solution in the presence of carbon electrodes, having no diaphragm in the electrolytic cell, and mixing the anode and cathode products by agitating the liquid.
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  • The telescope must be focussed on the edge of the quartz plate, and in order that all points of the field may be illuminated by the same part of the source, the flame must be so placed that its image is thrown by the lens on the diaphragm of the object glass of the telescope.
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  • One diaphragm gives the mirror a movement in a vertical direction while the other gives it a horizontal motion.
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  • The diaphragm was itself used as the rubbing surface, and it was either mounted and rotated or the fingers were moved over it.
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  • The current from the battery used passed from the diaphragm through the granulated carbon to the metallic back of the box.
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  • To the left of the vena cava is the Spigelian lobe, which lies in front of the bodies of the tenth and eleventh thoracic vertebrae, the lesser sac of peritoneum, diaphragm and thoracic aorta intervening.
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  • - As already mentioned, mammals are specially characterized by the division of the body-cavity into two main chambers, by means of the horizontal muscular partition known as the diaphragm, which is perforated by the great blood-vessels and the alimentary tube.
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  • From its lower margin the right lateral ligament is reflected on to the diaphragm.
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  • An oblong metallic box fitted with pivots, whose bearings are attached to the triangular beams, forms the tube for two parallel telescopes; these are separated throughout their length by a metallic diaphragm.
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  • The slender stem is hollow, and, as generally in grasses, has well-marked joints or nodes, at which the cavity is closed by a strong diaphragm.
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  • If, however, we fix the points lying towards the margin of the field of view, the diaphragm gradually cuts off more and more of the rays which were necessary to fill the pupil, and in consequence the brightness gradually falls off to zero.
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  • In most cases a diaphragm regulates the rays.
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  • Wollaston altered this by taking two piano-convex lenses, placing the plane surfaces towards each other and employing a diaphragm between the two parts (fig 5).
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  • This construction was further improved (I) by introducing a diaphragm between the two lenses; (2) by altering the distance between the two lenses; and (3) by splitting the lower lens into two lenses.
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  • These anastigmatic lenses, which are manufactured up to X 40, are chromatically and spherically corrected, and for a middle diaphragm the errors of lateral pencils, distortion, astigmatism and coma are eliminated.
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  • The position of the diaphragm limiting the pencils proceeding from the object-points is not constant in the compound microscope.
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  • If the pencils are limited in the objective, the restriction of the pencil proceeding from the object-point is effected by either the front lens itself, by the boundary of a lens lying behind, by a real diaphragm placed between or behind the objective, or by a diaphragm-image.
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  • E=plane focused for; 01 *, 02 * =projections of 0102 on E; Z= centre of projection; P P1=a virtual image of real diaphragm P'P 1 ' with regard to the preceding part of the objective is the entrance pupil.
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  • To ensure the telecentric transmission, the diaphragm in the back focus of the objective may be replaced by a diaphragm in the front focal plane of the condenser, supposing that uniformly illuminated objects are being dealt with; for in this case all the principal rays in the object-space are transmitted parallel to the axis.
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  • With uniformly illuminated objects it may happen that the pencil in the object-space may be limited before passing the object, either through the size of the source of light employed or through a diaphragm connected with the illuminating system.
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  • The diaphragm limiting them, i.e.
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  • The entrance window is then the real image of this diaphragm projected by the objective in the surface conjugate to the plane focused for, and the exit window is the image projected by the eyepiece; this happens with the image of the object lying at infinity.
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  • (From Abbe, Theorie der Bilderzeugung Mikroskop.) of direct lighting, so that a banding of double the fineness can be perceived, by inclining the illuminating pencil to the axis; this is controlled by moving the diaphragm laterally.
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  • If one cuts out by a diaphragm in the back focal plane of the objective all diffraction spectra except the principal maximum, one sees in the image a field divided into two halves, which show with different clearness, but no banding.
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  • By choosing a somewhat broader diaphragm, so that the spectra of 1st order can pass the larger division, there arises in the one half of the field of view the image of the larger division, the other half being clear without any such structure.
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  • By using a yet wider diaphragm which admits the spectra of 2nd order of the larger division and also the spectra of 1st order of the fine division, an image is obtained which is similar to the object, i.e.
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  • The cutting off of the chief maximum can be effected by a suitable diaphragm in the back focal plane of the objective.
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  • A changeable diaphragm is placed at the upper end of a short tube which can be moved in a case below the stage in the direction of the optical axis.
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  • As a rule an iris diaphragm, which can be moved sideways, is now fitted below this condenser; below is the mirror which can be moved in all directions.
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  • The iris diaphragm can be regulated by the lever p; it can also be turned to one side round the pivot z, so that the condenser k can be removed or changed.
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  • The iris diaphragm i is pushed to the side by the rack and pinion t n.
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  • It is best if the image of the light is not larger than the object examined, and to effect this, an illuminating lens with an iris diaphragm is often placed between the source of light and the illuminator.
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  • The central diaphragm disk keeps away all the light which would otherwise fall directly into the objective, and the open zones send so many oblique rays through the object that they cannot all be taken up by the objective.
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  • A diaphragm s is placed in the middle of the spherical surface, and this keeps back the central rays.
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  • This diaphragm is sometimes fixed to a handle piercing the condenser, and which can be moved up and down, so that the aperture of the oblique entering cones of rays can be altered.
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  • For examining preparations in polarized light a polarizer D is introduced n the illuminating apparatus below the diaphragm and an analyser E ai.
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  • 55, is obtained by means of a stop of the form shown in the lower figure and placed under the condenser in the plane The entrance pupil is in this way reduced separate fields, which nevertheless contain rays of is necessary that the outside edge of the diaphragm coincides with the edge of the entrance pupil.
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  • This can be attained by drawing the iris diaphragm so far as to form the entrance pupil.
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  • The double diaphragm is then in such a position that the edge of the outer diaphragm coincides with the edge of the iris diaphragm.
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  • A diaphragm with a very narrow hole is placed on the stage, and the microscope sharply focused on the edges of the hole.
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  • The ratio of half the length of the visible piece of the scale to its distance from the diaphragm on the stage gives the tangent of half the angular aperture.
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  • The diaphragm air pump can be fitted with tubing an airstone to produce a glorious array of bubbles.
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  • The corrugated cloth surround is coated with a damping material to make diaphragm movement more linear and discourage cone breakup.
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  • Perhaps the easiest methods are to offset a partially closed condenser iris diaphragm or the image of the light source.
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  • Like the first stage the 2nd stage scuba regulator uses a diaphragm or piston to open a valve.
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  • It had a diaphragm which moves a piston which does two things.
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  • The tortoise also lacks a muscular diaphragm, having only a thin membrane to separate the lungs from the rest of the body cavity.
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  • The magnetic field attracts the thin diaphragm which bends toward the magnet.
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  • An iris diaphragm controls the amount of light entering the eye.
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  • The substage diaphragm was reduced to enhance diffraction colors.
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  • The aperture diaphragm is located at the light guide end.
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  • If a rubber diaphragm is fitted, examine it for damage or deterioration.
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  • Köhler lighting systems have an iris or field diaphragm which controls the aperture of light going into the condenser.
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  • To center the condenser close down the iris diaphragm and remove the eyepiece.
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  • The top of the sella turcica is covered by a diaphragm, which has a foramen in the center through which the infundibulum passes.
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  • The substage condenser has an iris diaphragm and filter carrier.
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  • Open the substage iris diaphragm fully, since the condenser needs to be operating at maximum aperture.
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  • It is important that you fully open the contrast iris diaphragm.
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  • This exhalation should come from the diaphragm and not be excessively noisy as in a grunt or a snort.
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  • In mammals, it is located in the anterior part of the visceral cavity, just posterior to the diaphragm.
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  • It is in the abdomen on the right side of the body between the diaphragm and the lower rib cage.
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  • The trouble is caused by the faulty oesophageal sphincter, the muscular ring at the lower end of the esophagus, near the diaphragm.
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  • The response is switched by opening or closing vents in the capsule backplate, so diaphragm thickness, tension and spacing are unchanged.
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  • The strain gage pressure transducer involves movement of a diaphragm with changes in pressure.
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  • He set out to create a speaker diaphragm from solid wood.
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  • The spring was attached to the centre of a diaphragm in such a way that, when the drum was turned, the friction between the point of the spring and the paper deflected !
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  • Hence, when the undulating telephonic currents were made to pass through the apparatus, the constant variation of the friction of the spring caused the deflexions of the diaphragm to vary in unison with the variation of the electric The extreme smallness of the magnets which might be successfully employed was first demonstrated by Professor Peirce of Brown University, Providence, R.I.
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  • It was very early recognized - and, indeed, is mentioned in the first patents of Bell, and in a caveat filed by Elisha Gray in the United States patent office only some two hours after Bell's application for a patent - that sounds and spoken words might be transmitted to a distance by causing the vibrations of a diaphragm to vary the resistance in the circuit.
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  • - Diagram showing the position of the coxal glands of a scorpion, Buthus australis, Lin., in relation to the legs, diaphragm (entosternal flap), and the gastric caeca.
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  • The superior surface is in contact with the diaphragm, but has peritoneum between (see Coelom And Serous Membranes).
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  • The upper part of this forms the future liver, and grows up into the septum transversum from which the central part of the diaphragm is formed (see Diaphragm).
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  • The component S 1 of the system, situated between the aperture stop and the object 0, projects an image of the diaphragm, termed by Abbe the " entrance pupil "; the " exit pupil " is the image formed by the component S2 j which is placed behind the aperture stop. All rays which issue from 0 and pass through the aperture stop also pass through the entrance and exit pupils, since these are images of the aperture stop. Since the maximum aperture of the pencils issuing from 0 is the angle u subtended by the entrance pupil at this point, the magnitude of the aberration will be determined by the position and diameter of the entrance pupil.
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  • These diaphragms are sometimes fitted in a slide, so that it is possible to move the diaphragm sideways and give oblique illumination (see below).
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  • Effects of boldine on mouse diaphragm and sarcoplasmic reticulum vesicles isolated from skeletal muscle.
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  • Spermicide-Used in combination with a diaphragm or alone, spermicides are good choice for birth control if used correctly, but they can be irritating to the vagina.
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  • The action of the muscles within the larynx, the diaphragm and the intercostal muscles creates air movement and pressure within the trachea during inhaling and exhaling.
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  • Learning to breathe deeply from the diaphragm is an important key to managing stress in your life.
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  • Consciously relax the muscles of your diaphragm.
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  • One of the best stress reduction techniques is deep breathing from the diaphragm, (diaphragm breathing or belly breathing).
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  • Inhale taking a deep breath that fills your diaphragm as you push it down and outward.
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  • By moving your diaphragm your lungs can fully inflate.
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  • Focus on the feeling of your diaphragm moving back inward.
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  • Medication can be filled and refilled in the pump by inserting a needle through the skin into a filling port (called a diaphragm) in the center of the pump.
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  • It can tell if there are anatomical changes in the esophagus, such as a hiatal hernia, a condition where the stomach bulges above the diaphragm.
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  • As the diaphragm and other muscles involved in breathing press against the lungs, the glottis suddenly opens, producing an explosive outflow of air at speeds greater than 100 miles (160 km) per hour.
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  • The theory behind the Heimlich maneuver is that by compressing the abdomen below the level of the diaphragm with quick abdominal thrusts, an "artificial cough" is created.
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  • Spermicide is a pharmaceutical substance used to kill sperm, especially in conjunction with a birth-control device such as a condom or diaphragm.
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  • Congenital diaphragmatic hernia (CDH) occurs when the diaphragm does not form completely at about eight weeks of gestation, leaving a hole in this muscle that separates the chest and the abdomen.
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  • Congenital diaphragmatic hernia (CDH)-A condition in which the fetal diaphragm (the muscle dividing the chest and abdominal cavity) does not close completely.
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  • Barrier methods include male condom and female condom, diaphragm, and cervical cap.
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  • Birth control pills work only if taken every day; the diaphragm is effective only if used during every episode of sexual intercourse.
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  • Some methods of birth control must be used specifically at the time of sexual intercourse (condoms, diaphragm, cervical cap, spermicides).
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  • Barrier methods: A woman must insert the diaphragm in just the right way to be sure that it works properly.
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  • Some women get more urinary tract infections if they use a diaphragm because the diaphragm can press against the urethra, the tube that connects the bladder to the outside.
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  • The most serious weakness of DMD is weakness of the diaphragm, the sheet of muscles at the top of the abdomen that perform the main work of breathing and coughing.
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  • Diaphragm weakness leads to reduced energy and stamina and increased lung infection because of the inability to cough effectively.
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  • People who develop weakness of the diaphragm or other ventilatory muscles may require a mechanical ventilator to continue breathing deeply enough.
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  • This occurs inside the body when the diaphragm, the large muscle that separates the abdominal cavity from the chest cavity, fails to develop fully.
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  • The structures that form the diaphragm do not properly form, allowing the contents of the lower abdomen to migrate up near the heart and lungs.
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  • If the bowels are injured or malrotated, this will be repaired, and the hole in the diaphragm is sewn closed and patched, if necessary, with surgical mesh.
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  • Abnormalities often occur in the lungs and diaphragm (the muscle that controls breathing), and blood vessel malformations are common.
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  • Congenital diaphragmatic hernia-A profusion of part of the stomach through an opening in the diaphragm that is present at birth.
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  • Before long the muscles that move the ribs and diaphragm, so that air is drawn into the lungs, become fatigued.
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  • Injuries of the neck above C4 with significant involvement of the diaphragm have worse outcomes.
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  • If you're trying not to get pregnant, either avoid intercourse entirely during your fertile period, or use a barrier method like a condom or diaphragm.
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  • By the third trimester, the baby is taking up so much room in your belly that he/she may be pressing upward on your diaphragm.
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  • Your doctor will probably suggest that you keep taking your pills but also use condoms, a diaphragm, or another barrier method.
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  • The cervical cap and diaphragm can be used either with or without spermicide.
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  • For women who always use the diaphragm properly, 6 out of 100 women will become pregnant each year.
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  • For example, both the cap and diaphragm must be inserted into the vagina.
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  • It looks similar to a diaphragm but is squishy and soft.
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  • Diaphragm contraceptive is an effective barrier method of birth control.
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  • The first use of the diaphragm contraceptive was in the 1880s.
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  • The diaphragm is a small round latex or silicone dome that is inserted into the vagina.
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  • Before sexual intercourse, a woman folds the diaphragm in half and pushes it all they way up until it unfolds and covers her cervix.
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  • To have the highest success rate with the diaphragm contraceptive, it should be combined with a spermicide.
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  • To get a diaphragm that fits properly your doctor will insert and remove several different sizes into your vagina.
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  • The shape of a woman's vagina and cervix changes when she gains or loses weight or has a baby so she should be refitted for another diaphragm if this occurs.
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  • Before inserting the diaphragm, a woman should wash her hands.
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  • Apply the recommended amount of spermicide on the diaphragm.
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  • The diaphragm can be inserted anytime before sexual intercourse, but studies show that it may be more effective if it is in place before a woman gets aroused as the vagina may change shape during arousal.
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  • Fold the diaphragm in half and push it up into the vagina as far as it will go.
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  • Keep the diaphragm in the vagina for six to eight hours after intercourse to keep the sperm from entering through the cervix.
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  • To remove the diaphragm insert your finger up as far as you can and hook the rim of the diaphragm and pull it out.
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  • This is all completely painless as the diaphragm is soft and flexible.
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  • Check the diaphragm frequently for tears or holes.
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  • The diaphragm contraceptive is 99 perfect effective with perfect use in conjunction with a spermicide.
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  • The biggest disadvantage of the diaphragm is the difficulty of insertion for many women.
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  • If you are not able to put in the diaphragm correctly, do not consider it an effective method of birth control.
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  • If the errant uterine tissue travels to other parts of the body like the abdominal wall or the diaphragm, the woman may have pain in these areas associated with the menstrual cycle as well.
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  • The experiments with this form were not successful, and, with the view of making the moving parts as light as possible, he substituted for the comparatively heavy lever armature a small piece of clock spring, about the size of a sixpence, glued to the centre of the diaphragm.
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  • Varley, who proposed to make use of it in a telegraphic receiving instrument.4 In Dolbear's instrument one plate of a condenser was a flexible diaphragm, connected with the telephone line in such a way that the varying electric potential produced by the action of the transmitting telephone caused an increased or diminished charge in the condenser.
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  • This alteration of charge caused a corresponding change in the mutual attraction of the plates of the condenser; hence the flexible plate was made to copy the vibrations of the diaphragm of the transmitter.
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  • Both Bell and Gray proposed to do this by introducing a column of liquid into the circuit, the length or the resistance of which could be varied by causing the vibrations of the diaphragm to vary the depth of immersion of a light rod fixed to it and dipping into the liquid.
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  • 5 He proposed to introduce into the circuit a cell containing carbon powder, the pressure on which could be varied by the micro- vibrations of a diaphragm.
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  • In the Ader transmitter as many as twelve carbon pencils were employed, arranged in a series of two groups with six pencils in parallel in each group. These were supported at their ends in parallel carbon bars, which were carried by a nearly horizontal wooden diaphragm.
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  • The front face was of thin metal, and served as a diaphragm.
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  • When spoken to the diaphragm vibrated, and thus set the carbon granules into vigorous vibration.
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  • It is attached to a brass disk E, which is fastened to the centre of the diaphragm F by means of a rivet, and is capable of moving to and fro like a plunger when the diaphragm vibrates.
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  • The box is thus entirely closed at the front, while the front carbon disk, which constitutes an electrode, is perfectly free to follow the motions of the diaphragm.
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  • The sternum has no keel, and ossifies from lateral and paired centres only; the axes of the scapula and cora.coid have the same general direction; certain of the cranial bones have characters very unlike those possessed by the next order - the vomer, for example, being broad posteriorly and generally intervening between the basisphenoidal rostrum and the palatals and pterygoids; the barbs of the feathers are disconnected; there is no syrinx or inferior larynx; and the diaphragm is better developed than in other birds.'
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  • The scorpion's entosternite gives rise to outgrowths, besides the great posterior flaps, pf, which form the diaphragm, unrepresented in Limulus.
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  • In Scorpio the completion of the horizontal plate by oblique flaps, so as to form an actual diaphragm shutting off the cavity of the prosoma from the rest of the body, possibly gives to the organs contained in the anterior chamber a physiological advantage in respect of the supply of arterial blood and its separation from the venous blood of the mesosoma.
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  • Some Pilates instructors will ask participants to really force the breath out audibly, straight from the diaphragm, in order to make certain no one is holding breath back on a movement.
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  • Start with gentle breathing deep from the diaphragm.
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  • When you exhale, your transverse abdominal muscle, which is your deepest layer, presses against the diaphragm to expel the air.
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  • Your deep core muscles are designed to press against your diaphragm to expel the air during exhalation.
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  • The transverse abdominal muscle compresses the diaphragm during exhalation.
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  • When the pressure on one side of the diaphragm thus becomes greater than that on the other, work may be done at the expense of heat in pushing the diaphragm, and the operation carried on with continual gain of work until the gases are uniformly diffused.
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  • At its posterior margin the peritoneum of the great sac is reflected on to the diaphragm to form the anterior layer of the coronary ligament.
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  • When the shortest distance obtained by the highest strain of accommodation is insufficient to recognize small objects, distinct vision is possible at even a shorter distance by placing a very small diaphragm between the eye and the object, the pencils of rays proceeding from the object-points, which otherwise are limited by the pupils of the eye, being thus restricted by the diaphragm.
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  • He shows how the paper must be moved till it is brought into the focus of the lens, the use of a diaphragm to make the image clearer, and also the application of the method for drawing in true perspective.
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  • In the best telescopes, whether for theodolite or level, the diaphragm on which the image is formed is made of glass, and the cross hairs are engraved thereon.
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  • Possibly the movement of the diaphragm may determine the passage of air into or out of the lung-sacs.
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  • Dawes found the best method for the purpose in question was to limit the aperture of the object-glass by a diaphragm having a double circular aperture, placing the line joining the centres of the circles approximately in the position angle under measurement.
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  • If Struve had employed a properly proportioned double circular diaphragm, fixed symmetrically with the axis of the telescope in front of the divided lens and turning with the micrometer, it is probable that his report on the instrument would have been still more favourable.
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  • - Diagram of the diaphragm in eyepieces of " the micrometer used for measuring the plates of the Astrographic Catalogue.
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  • In the experiment imagined by Lord Rayleigh a porous diaphragm takes the place of the partition and trap-doors imagined by Clerk Maxwell, and the molecules sort themselves automatically on account of the difference in their average velocities for the two gases.
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  • In the specification of the patent applied for on the list of July 1877 he showed a sketch of an instrument which consisted of a diaphragm, with a small platinum patch in the centre for an electrode, against which a hard point, made of plumbago powder cemented together with india-rubber and vulcanized, was pressed by a long spring, the pressure of the carbon against the platinum disk being adjusted by a straining screw near the base of the spring.
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  • " the introduction of a diaphragm having two circular apertures touching each other in a point coinciding with the line of collimation of the telescope, and the diameter of each aperture exactly equal to the semidiameter of the cone of rays at the distance of the diaphragm from the focal point of the object-glass."
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  • At first the liver is embedded in the septum transversum, but later the diaphragm and it are constricted off one from the other, and soon the liver becomes very large and fills the greater part of the abdomen.
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  • Dicaearcus of Messana in Sicily, a pupil of Aristotle (326-296 B.C.), is the author of a topographical account of Hellas, with maps, of which only fragments are preserved; he is credited with having estimated the size of the earth, and, as far as known he was the first to draw a parallel across a map. 4 This parallel, or dividing line, called diaphragm (partition) by a commentator, extended due east from the Pillars of Hercules, through the Mediterranean, and along the Taurus and Imaus (Himalaya) to the eastern ocean.
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  • (I) The Diaphragm process is probably the only one employed at present for the decomposition of potassium chloride, and it is also used for sodium chloride.
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  • He sometimes held the carbon powder against the diaphragm in a small tr ans' shallow cell (from a quarter to half an inch in diameter and about an eighth of an inch deep), and sometimes he used what he describes as a fluff, that is, a little brush of silk fibre with plumbago rubbed into it.
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  • One set lies in front of the diaphragm, which is the most anterior and complete septum, the rest having disappeared or being much less developed.
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  • From both birds and reptiles the class is distinguished, so far at any rate as existing forms are concerned, by the following features: the absence of a nucleus in the red corpuscles of the blood, which are nearly always circular in outline; the free suspension of the lungs in a thoracic cavity, separated from the abdominal cavity by a muscular partition, or diaphragm, which is the chief agent in inflating the lungs in respiration; the aorta, or main artery, forming but a single arch after leaving the heart, which curves over the left terminal division of the windpipe, or bronchus; the presence of more or fewer hairs on the skin and the absence of feathers; the greater development of the bridge, or commissure, connecting the two halves of the brain, which usually forms a complete corpus callosum, or displays an unusually large size of its anterior portion; the presence of a fully developed larynx at the upper end of the trachea or windpipe, accompanied by the absence of a syrinx, or expansion, near the lower end of the same; the circumstance that each half of the lower jaw (except perhaps at a very early stage of development) consists of a single piece articulating posteriorly with the squamosal element of the skull without the intervention of a separate quadrate bone; the absence of prefrontal bones in the skull; the presence of a pair of lateral knobs, or condyles (in place of a single median one), on the occipital aspect of the skull for articulation with the first vertebra; and, lastly, the very obvious character of the female being provided with milk-glands, by the secretion of which the young (produced, except in the very lowest group, alive and not by means of externally hatched eggs) are nourished for some time after birth.
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