An Elementary Introduction to the Knowledge of Mineralogy: Including Some Account of Mineral Elements and Constituents; Explanations of Terms in Common Use; Brief Accounts of Minerals, and of the Places and Circumstances in which They are Found. Designed for the Use of the Student

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Collins and Company, 1818 - 246 páginas
 

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Página 136 - Small stones embracing those from the size of a grain of sand to that of a small pea.
Página viii - ... to tell us that water consists of 1 part of hydrogen by weight united with 8 parts of oxygen; that marble is composed of 56 parts of lime, and 44 of carbonic acid; common salt, of 35J parts of chlorine, and 23 of sodium ; turpentine, of 30 carbon, and 4 hydrogen ; chloroform, of 12 carbon, 1 hydrogen, and 106} chlorine.
Página xix - ... times heavier than water. Each metal posse'sses a color peculiar to itself. Some of them are exceedingly ductile, as is manifested by the extremely fine wires into which they are drawn. Most of them are good conductors of electricity and heat, and the greater number are elastic and flexible. The only metals known to the ancients were gold, silver, copper, iron, tin, lead, and mercury ; but discoveries have, from time to time, added to the catalogue until it has been swelled to the number of twenty-eight...
Página 209 - West Indies, and many other places. COAL. The bituminous substance called coal, though ranked among minerals because its basis is pure carbon, is now, by many, believed to be of vegetable origin ; because the substance which lies upon the coal, is always filled with vegetable remains ; as well as because a woodlike appearance may be traced through every species of coal, even the most compact. On the subject of coal deposites, particularly our own, it is my intention to treat more at large.
Página 203 - It is shaped like an egg, with an indented hollow near the smaller end. It is said to be of the finest water.
Página 82 - Pentelican marble have been decomposed, and sometimes exhibit a surface as earthy and as rude as common limestone. This is principally owing to veins of extraneous substances which intersect the Pentelican quarries, and which appear more or less in all the works executed in this kind of marble.
Página 203 - Rajah, who offered 150,000 dollars, two large war brigs with their guns and ammunition, together with a certain number of great guns, and a quantity of powder and shot.
Página 208 - Albania ; but no where so largely as in the island of Trinidad, where it. forms a lake three miles in circumference, and of a thickness unknown A gentle heat renders it ductile, and, when mixed with grease or common pitch, it is used for paying the bottoms of ships, and is supposed to protect them from the teredo of the West Indian seas. The ancients employed bitumen in the construction of their buildings. The bricks of which the walls of Babylou were built BITUMEN— BLACKBIRD.

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