The whole of the middle lamella or originally formed cell-wall separating one from another disappears before the adult state is reached, so that the walls of the hydroids consist of a framework of lignified bars, with open communication between the cell cavities.
Ice forms in the night, but disappears with the heat of the sun.
And it grows, merges, disappears from the surface, sinks to the depths, and again emerges.
When a few lumps of sugar are added to a glass of water and stirred, the sugar soon disappears and we are left with a uniform liquid resembling water, except that it is sweet.
In summer at the Bureau Central the intermediate peak nearly disappears in the profound afternoon depression, but it is still recognizable.
41, E), which finally disappears altogether, and the endodermlamella disappears.
As a bundle is traced towards its blind termination in the mesophyll the peridesmic stereom first disappears, the sieve-tubes of the phloem are replaced by narrow elongated parenchyma cells, which soon die out, and the bundle ends with a strand of tracheids covered by the phloeotermic sheath.
In some cases the plastid disappears and the crystalline pigment only is left.
In the yeast cell it accumulates and disappears very rapidly according to the conditions of nutrition and is sometimes so abundant as to fill the cell almost entirely (Errera, 1882, 1895: Wager and Peniston, 1910).
Coincident with these changes the nuclear membrane disappears and a spindle-shaped or barrelshaped group of threads makes its appearance in.
Here palm trees, which had begun to appear singly at Deir, grow in large groves, the olive disappears entirely, and we have definitely passed over from the Syrian to the Babylonian, flora and climate.
Towards the Black Sea coast its thickness diminishes, and it disappears in the valleys.
On the thick layer of black earth by which the steppe is covered a luxuriant vegetation develops in spring; after the old grass has been burned a bright green prevails over immense stretches, but this rapidly disappears under the burning rays of the sun and the hot E.
For days together the traveller sees no other vegetation; even this, however, disappears as he approaches the regions recently left dry by the Caspian, where saline clays, bearing a few Salsolaceae, or mere sand, take the place of the black earth.
Apart from tradition, Samoan is the most archaic of all the Polynesian tongues, and still preserves the organic letter s, which becomes h or disappears in nearly all the other archipelagos.
To the southward, as the valleys become increasingly sandy and saline, even the sage-brush disappears, and little vegetation besides the cactus and the yucca is to be seen.
It is well known that if energy disappears in one form it reappears in another, and this principle applied to the sun will explain the famous difficulty.
Carry the process but a little farther and the coelom disappears and its place is taken by a blood space or haemocoel.
In some forms the coiling disappears in the adult, leaving the shell simply conical as in Patellidae, Fissurellidae, &c., and in some cases the shell is coiled in one plane, e.g.
As in other Gastropoda Anisopleura, this shell-sac may abnormally develop a plug of chitinous matter, but normally it flattens out and disappears, whilst the cap-like rudiment of the permanent shell is shed out from the dome-like surface of the visceral hump, in the centre of which the shell-sac existed for a brief period.
It flattens out short visceral " loop " with its three ganglia and disappears before is lightly-shaded.
The antennal segment apparently entirely disappears, with the exception of a pair of appendages it bears; these become the antennae; it is possible that the original segment, or some part of it, may even become a portion of the actual antennae.
The changes have been found to be made up of two sets of processes: histolysis, by which the whole or part of a structure disappears: and histogenesis, or the formation of the new structure.
He wrote the book at different times between 1170 and 1183, when it abruptly ends, and its author as abruptly disappears from sight.
At first 20 grains of sodium salicylate should be given every hour: the interval being doubled as soon as the pain disappears, and extended to three hours when the temperature becomes normal.
Thus the Rio San Antonio suddenly disappears near San Antonio de los Banos; the cascades of the Jatibonico del Norte disappear and reappear in a surprising manner; the Moa cascade (near Guantanamo) drops 300 ft.
Into a cavern and its waters later reissue from the earth; the Jojo river disappears in a great " sink " and later issues with violent current at the edge of the sea.
Shiloh disappears from history; neither Saul nor even Samuel, whose youth had been spent with it, takes any further thought of it.
After this time the city disappears from history; and, whether or not its ruin was caused by the Arabs, they seem to have made no settlement there.
In three days, has a strong ammoniacal odour, which rapidly disappears, and in consequence of the loss of ammonia the latex will not keep for longer than a day unchanged; hence when it has to be carried to a distance from the place of collection, 3% of ammonia solution is added.
Hence every product of A 1, A2, A3, A4, which contains the product A 4 A 3 disappears before reduction; this means that every seminvariant, whose partition contains the parts 4, 3, is a perpetuant.
The following are the chief results of Hopkinson's experiments: For small magnetizing forces the magnetization of iron steadily increases with rise of temperature till the critical temperature is approached, when the rate of increase becomes very high, the permeability in some cases attaining a value of about i i,000; the magnetization then with remarkable suddenness almost entirely disappears, the permeability falling to about 1.14.
(After Beecher, from Zittel.) retained as a rudimentary, separate, detached somite in front of the mesosoma, or disappears altogether (excalation).
This plain is of varying width, and on some parts of the coast it disappears altogether.
638, Beroea disappears, and as Moslem society settles down Halep emerges again as the great gathering-place of caravans passing from Asia Minor and Syria to Mesopotamia, Bagdad and the Persian and Indian kingdoms. Like Antioch it suffered from earthquakes, and late in the 12th century, after a terrible shock, had to be rebuilt by Nur ed-Din.
In his histories proper the special motive for embellishment disappears, but the habit of inaccuracy remains.
But (as always happens in the case of literary work where the form exactly suits the author's genius) the purpose in all the best of them disappears almost entirely.
And as the personal element disappears in the conception of the prophetic calling, so it tends to disappear in the prophetic view of history, and the future comes to be conceived not as the organic result of the present under the divine guidance, but as mechanically determined from the beginning in the counsels of God, and arranged under artificial categories of time.
Dawasir, it runs eastward till it disappears in the belt of sandy desert 100 m.
Attila and his Huns were among the temporary occupants of the place (5th century), and in the following century it came into the possession of the Avars, after which its name disappears from history until towards the close of the 8th century, when Charlemagne expelled the Avars and made the district between the Enns and the Wiener Wald the boundary of his empire.
Both components come over in a constant proportion until one disappears; it is then necessary to raise the temperature in order to distil the residue.
In the later middle ages he is represented as fighting with giants, dragons and dwarfs, and finally disappears on a black horse.
Towards the south this starfish disappears, it seems, completely; for it is not yet known with certainty to exist either in the Mediterranean or in the southern parts of the Atlantic Ocean.
But this phraseology soon disappears, without his considering how, in default of some sort of teleology, it is legitimate to treat the world's history as a process.
Before he arrived Tiberius died, and Pilate disappears from history.
If the outer shell is connected to the earth, the charge +Q on it disappears, and we have the capacity C of the inner sphere given by C= I /R 1 - I /R2=(R2 - R1) R1R2 (II).
Others see in the glass coloured figures of men, women and animals in motion; while in rarer cases the ball disappears from view, and the scryer finds himself apparently looking at an actual scene.
Then he disappears altogether, with the exception of some brief and chiefly diplomatic mentions.
Above this grows a species of pine, which becomes dwarfed and disappears at an altitude of about 6000 ft., beyond which is a zone of lichen and moss covered or almost bare rock.
When it has a very strong and penetrating odour, but when it is thoroughly purified from sulphuretted and phosphuretted hydrogen, which are invariably present with it in minute traces, this extremely pungent odour disappears, and the pure gas has a not unpleasant ethereal smell.
He distinguished himself by a brilliant action at the siege of Vannes in 1342; and after that he disappears from history for some years.
Each of the above formulae involves an arbitrary constant; but this disappears when we start the additions from 'a known value of X udx.
Suddenly your adversary's checker disappears beneath the board, and the problem is to place yours nearest to where his will appear again.
"You know, people do ask questions if someone just randomly disappears," Ingrid pointed out.
Then a disappears from all the above expressions.
In Clausilia, according to the observations of C. Gegenbaur, the primitive shell-sac does not flatten out and disappear, but takes the form of a flattened closed sac. Within this closed sac a plate of calcareous matter is developed, and after a time the upper wall of the sac disappears, and the calcareous plate continues to grow as the nucleus of the permanent shell.
This distribution is most marked at about 300 fathoms, and disappears at soo fathoms, beyond which depth the lines tend to become parallel and to run east and west, the gradient slowly diminishing.