. Chemistry: general, medical, and pharmaceutical, including the chemistry of the U. S. Pharmacopia. A manual on the general principles of the science, and their applications in medicine and pharmacy. xygen in combining condensed to two volumes of the resulting bulk of steam afterward shrunk most consider-ably in condensing to water is another matter altogether—a physi-cal and not a chemical result, and due to the approximation of themolecules of water after formation. Another experiment already performed, illustrating the characterof the manifestations of chemical force (symbolical
. Chemistry: general, medical, and pharmaceutical, including the chemistry of the U. S. Pharmacopia. A manual on the general principles of the science, and their applications in medicine and pharmacy. xygen in combining condensed to two volumes of the resulting bulk of steam afterward shrunk most consider-ably in condensing to water is another matter altogether—a physi-cal and not a chemical result, and due to the approximation of themolecules of water after formation. Another experiment already performed, illustrating the characterof the manifestations of chemical force (symbolically noted as fol-lows), was that in which the red-hot carbon of wood was plungedinto oxygen. The evidence of chemical action in that case was CHEMICAL PHILOSOPHY. 47 the sudden inflammation of the carbonaceous extremity of the particles of carbon and oxygen, having intense attraction oraffinity for each other at that temperature, rushed together soimpetuously as suddenly to produce a large additional quantity ofheat, an amount sufficient to cause the particles to emit an intensewhite light. The action is expressed on paper in either of the fol-lowing ways : C2 -f 202 = 2C02, or, 0 1C. o2 C02 is the formula of the well-known gaseous body commonlytermed carbonic acid gas. The reader should here draw for himself equations or diagramssimilar to those on pages 42 and 46, and thus show the forma-tion of the three other bodies he has already produced—namely, phosphoric anhydride (Pa05), sulphurous acid gas(S02), and ferrous iodide (Fel2), submitting the same, if pos-sible, to a tutor or other authority to assure himself of theircorrectness. Note.—In the foregoing experiments several illustrations occur ofthe formation of compounds having the gaseous, liquid, and solidconditions, in one of which three forms all matter in the universeapparently exists. Laws of Chemical Combination (by Weight).Chemistry as a science is little more than a hundred years old,though very many o
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