Animal and vegetable substances used in the arts and manufactures, explanatory of Dexter's Cabinet of objects

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Página 114 - Hindustan, nor the excellence to which the natives had attained, has enabled them to withstand the competition of those who buy their cotton ; and who, after carrying it five thousand miles to be manufactured, carry back the goods to them.
Página 123 - ... which are moved about with a rapid motion in all directions, probably to catch food. Others are so sluggish, that they may be mistaken for pieces of the rock, and are generally of a dark colour, and from four to five inches long, and two or three round.
Página 147 - ... fragments of horn, melted and compressed into a solid mass in moulds, form bell-pulls, handles for table knives and forks, knobs for drawers, and many other useful articles ; or, if exposed to a decomposing heat in close vessels, these fragments develop Prussic acid, and for this reason are in demand among the manufacturers of Prussian blue, and of the beautiful yellow prussiate of potash. The solid tips of the horns are always sawn off, because these parts are not lamellated, and, therefore,...
Página 135 - Brande)fin its caterpillar state, which maybe considered as the first stage of its existence, after acquiring its full growth (about three inches in length), proceeds to enclose itself in an oval-shaped ball or cocoon, which is formed by an exceedingly slender and long filament of fine, yellow silk, emitted from the stomach of the insect preparatory to its assuming the shape of the chrysalis or moth.
Página 150 - For the king had at sea a navy of Tharshish with the navy of Hiram : once in three years came the navy of Tharshish, bringing gold, and silver, ivory, and apes, and peacocks.
Página 181 - QUILLS, are the large feathers taken out of the end of the wings of geese, 09itriches, crows, &c. They are denominated from the order in which they are fixed in the wing ; the second and third quills being the best for writing, as they have the largest and roundest barrels.
Página 84 - The fruit at first contains a clear insipid fluid, by which travellers allay their thirst ; afterwards this same liquor becomes milky and sweet, and it changes its taste by degrees as it acquires solidity, till at last it is almost as hard as ivory. The liquor contained in the young fruits becomes acid if they are cut from the tree and kept some time.
Página 113 - The rapid growth and prodigious magnitude of the cotton manufacture of Great Britain, are, beyond all question, the most extraordinary phenomena in the history of industry.
Página 160 - a brave, hardy people, equally qualified to handle the plough and the sword ; and they were also skilful in the woollen manufacture, the great staple of their country ; so that in every respect they were a most valuable colony, whether considered as a barrier against the enemy, or the first founders of the manufacture of fine woollens in England,
Página 176 - The mass is put into hair or woollen bags, and pressed between plates of iron in a screw-press, until it becomes hard and brittle ; it is then broken into small pieces, and thrown into boiling water, where it melts, and the impurities are separated from it. After being cooled, and taken from the first water, it is put into a boiler of clean water, and a weak solution of potash is gradually added. This is thrice repeated, after which the whole is poured into coolers, when the spermaceti concretes...

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