Catalogue of Minerals and Tables of the Species

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Page 58 - The sin of Judah is written with a pen of iron, and with the point of a diamond : it is graven upon the table of their heart, and upon the horns of your altars ; whilst their children remember their altars and their groves by the green trees upon the high hills.
Page 22 - Arsenic As Barium Ba Bismuth Bi Boron B Bromine Br Cadmium Cd Caesium Cs Calcium Ca Carbon C Cerium Ce Chlorine Cl Chromium Cr Cobalt Co Columbium Cb Copper Cu...
Page 57 - By this means the whole surface becomes covered with deep scratches. Then a fine hone or turkey-stone is rubbed over again in the direction of the diameter, until the former marks are nearly obliterated, and by the crossing of the scratches a kind of soft grain is...
Page 3 - At the time of crystallization the material is usually in a state of fusion, or of gas or vapor, or of solution, In the case of iron the crystallization takes place from a state of fusion and while the result is ordinarily a mass of crystalline grains, distinct crystals are sometimes formed in any cavities. If, in the cooling of a crucible of melted lead, bismuth, or sulphur, the crust be broken soon after it forms, and the liquid part within be turned out, crystals will be found covering the interior.
Page 2 - Where neither of these can be procured, United States or National Bank Notes or Postage Stamps, can be sent by express, or by registered letter, with safety, the sender prepaying the express charges.
Page 55 - ... inhabitants, a fearful earthquake took place, in which numbers of them perished ; and it was only on the I3th of May, 1803, that the sad remnant was reinstated in their rightful property. It seemed as if the genii, guardians of the treasure, were indignant at the presumption of man, and tried by every means to prevent the dispersion of their buried treasures. The riches of these places are incalculable ; the gold is abandoned to the slaves as unworthy the attention of their • owners. Children,...
Page 74 - ... other species. The crystals are invariably prismatic in habit, and show but one terminated extremity ; in this respect they differ from the ordinary childrenite of Tavistock. to which it will be shown they are closely related. The general form is shown in fig. 1. The crystallographic measurement and also the optical examination prove that the crystals belong to the ORTHORHOMBIc SYSTEM.
Page 48 - Guzerat, and are generally cut and polished in Cambay. On being taken from their native bed, they are exposed to the heat of the sun for two years : the longer they remain in that situation the brighter and deeper will be the colour of the stone ; fire is sometimes substituted for the solar ray, but with less effect, as the stones frequently crack, and seldom acquire a brilliant lustre. After having undergone this process, they are boiled for two days, and sent to the manufactories at Cambay. The...
Page 8 - ... appearance. It generally breaks out in slabs from a few inches to a foot or more thick.
Page 58 - The double-cut brilliant is the most common form at tiiepresent day. The general form of the rough diamond Is of two pyramids, joined at the base ; if a diamond is not naturally of this form, it must be made so by art ; and in order to procure the table, there must be taken from the upper pyramid five-eighteenths, and from the lower oneeighteenth of the total thickness. The upper or flat part is called the table, and from thence to the girdle or centre edge, and broadest part of the stone, are facets,...

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