Both the grinding and polishing tools are grooved, to obtain a uniform distribution of the emery used in the grinding process and of the rouge employed in polishing, as also to provide for the lateral expansion of the pitch with which the polisher is coated.
With Alex, the relationship seemed to be either grinding up a long hill or plunging perilously toward the depths of despair.
His teeth were grinding loudly enough for her to hear, and his face was ashen and drawn in a look of pain. He couldn't answer – that much she discerned at the rippling muscles of his clenched jaw.
Instantly the grinding of his teeth stopped, and his ragged breathing began to slow. He uncurled, and she withdrew her hand before he disappeared from the dream again. Even so, she wasn't able to shake the warmth of his magic flying up her arm and through her, reminding her of what it was like being near him when she was alive. Even the skin of a half-demon was smooth and warm. She used to resent the way his touch made her feel like she belonged to him, until she'd walked into the Caribbean knowing he might never touch her again.
There wasn't any bumping and grinding and those beds are noisy.
In total loss of her temper, she marched over and stomped on the phone, grinding it under her boot heel.
- Grinding Surface of moderately worn Right Upper Second Molars of Rhinoceros.
Deeply pitted with the marks of the abrasive used in grinding it down; these marks are removed by the process of smoothing, in which the surface is successively ground with abrasives of gradually increasing fineness, leaving ultimately a very smooth and very minutely pitted " grey " surface.
The surface of this was brought by planing, grinding and other means to the highest possible pitch of smoothness and evenness.
Over the dusty hood, the yawning valley beckoned, and then... the sound of metal grinding against rock.
The plates are compressed from before backwards, the anterior and posterior surfaces (as seen in the worn grinding face of the tooth) being nearly parallel.
The molar teeth are of coarse construction, with fewer and larger plates and thicker enamel; the ridge-formula being 3, 6, 7, 8, io; while the plates are not flattened, but thicker in the middle than at the edges, so that their worn grinding-surfaces are lozengeshaped.
Now, if CD is pressed by its weight or by a spring on the surface AB, the effect of wear will be to produce a symmetrical grinding away of both surfaces, which may be represented thus, fig.
By this time he had ceased to devote himself to pure mathematics, and in company with his friends Mersenne and Mydorge was deeply interested in the theory of the refraction of light, and in the practical work of grinding glasses of the best shape suitable for optical instruments.
A part of the helium contained in minerals can be extracted by heat or by grinding.
The short period of this evolution is at least one factor in the primitive grade of even the most specialized members of the group. In the advance of their molar teeth from a tritubercular to a grinding type, the author traces a curious parallelism between marsupials and placentals.
Sulphur mining M h 1 supplies large industries of sulphur-refining and grinding, - in spite of American competition.
They are rich in grinding stone, and in phosphatic deposits.
On the one side was the grinding poverty of the poor; on the other the abuses of the governors.
3, 4a): the keepers of the house (the arms and hands) tremble, the strong men (the legs and perhaps the backbone) are bent, the grinding women (the teeth) cease to work, those that look out of the windows (the eyes) are darkened, the street-doors are shut, the sound of the mill being low (apparently a summary statement of the preceding details: communication with the outer world through the senses is cut off, the performance of bodily functions being feeble); the rest of v.
Plantations have increased greatly in size (and also diminished in number), greater capital is involved, bagasse furnaces have been introduced, double grinding mills have increased by more than a half the yield of juice from a given weight of cane, and extractive operations instead of being carried on on all plantations have been (since 1880) concentrated in comparatively few " centrals " (168 in Feb.
The most profitable unit is calculated to be a daily consumption of 1500 tons of cane, or 150,000 in a grinding season of loo days, which implies a feeding area not above 6000 acres.
QUERN, the primitive form of hand-mill for grinding corn, consisting of two flat circular stones; the lower stone, often shaped with a rim; has a wooden or metal pin in the centre which passes through a hole in the upper stone; the worker pours the grain through the hole with one hand, revolving the upper stone with the other by means of a peg fixed to one side.
"Buff" or "levi gated litharge" is prepared by grinding the larger pieces under water.
Another process depends upon the formation of lead chloride by grinding together litharge with salt and water, and then treating the alkaline fluid with carbon dioxide until it is neutral.
The most serious drain on the population is caused by emigration, due partly to the grinding poverty of the mass of the peasants, partly to the resentment of the subject races against the process of " Magyarization " to which they have long been subjected by the government.
Guncotton in an air-dry state, whether in the original form or after grinding to pulp and compressing, burns with very great rapidity but does not detonate unless confined.
When the glass is cold the surplus is removed either by grinding, or by applying heat to a line scratched with a diamond round the bowl.
The first step in this process is that of grinding the surface down until all projections are removed and a close approximation to a perfect plane is obtained.
This term is applied to blown sheet-glass, whose surface has been rendered plane and brilliant by a process of grinding and polishing.
Steel-grinding was notoriously unhealthy, and manufacturing processes generally were less favourable to life than agricultural.
In the cheekteeth the sectorial or scissor-like cutting function is developed at the expense of the tubercular or grinding, there being only one rudimentary tooth of the latter form in the upper jaw, and none in FIG.
The consummate hardness of the diamond, in spite of its high price, has made it most useful for purposes of grinding, polishing and drilling.
Many fish inhabited the Carboniferous seas and most of these were Elasmobranchs, sharks with crushing pavement teeth (Psammodus), adapted for grinding the shells of brachiopods, crustaceans, &c. Other sharks had piercing teeth (Cladoselache and Cladodus); some, the petalodonts, had peculiar cycloid cutting teeth.
Owen's description showed this view to be groundless, and he attributed the extraordinary development of the toucan's beak to the need of compensating, by the additional power of mastication thus given, for the absence of any of the grinding structures that are so characteristic of the intestinal tract of vegetable-eating birds - its digestive organs possessing a general simplicity of formation.
Swaying upward with the roll of the ship the two foremost brows came down scraping and grinding along the mole.
Despite the harsh land-laws and grinding taxation which prevent them, with all their industry and thrift, from securing the freehold of the patch of ground cultivated by each peasant family, the Asturians regard themselves as the aristocracy of Spain.
There can be little doubt that before the AngloSaxons came to Britain they possessed no instrument for grinding corn except the quern (cweorn), and in remote districts this continued in use until quite late times.
The grinding seems to have been performed chiefly by female slaves, but occasionally we hear also of a donkey-mill (esolcweorn).
Among these, the tuco-tucos (Ctenomys) are characterized by their burrowing habits, almost rudimentary ears, small eyes, short tails and the kidneyshaped grinding-surfaces of their cheek-teeth.
Such implements as have survived are of the rudest description, and include querns or stone handmills for grinding corn, stone worts and bone combs employed in primitive forms of woollen manufacture, and specimens of simple pottery ware.
Miihle), the term given to the apparatus or machinery used in the grinding of corn into flour, and hence applied to similar mechanical devices for grinding, crushing to powder, or pulping other substances, e.g.