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It is found in all living ti ues, and the study of its vast number of compounds constitutes organic chemistry, c. bisul'phide, carb one i disulphidum. c. diox'ide, COj, the product of the combustion of carbon with a free supply of air; carbonic acid gas. c. diox'ide snow, see snow. c. disul'phide, carb one i disulphidum. c. monox'- ide, CO, formed by the combustion of carbon with a limited supply of air, a colorle , odorle , and poisonous gas, its toxic action being due to its strong affinity for hemoglobin; it was used by the Germans in the world war as an asphyxiating gas. ti. tetrachlo'ride, tet rach lor methane, CCli; a transparent colorle liquid, used as a cleansing fluid and as a local anesthetic. (Br.). Carbon bisulphide or disulphide, CS2; a colorle liquid of a characteristic ethereal odor, fetid when impure; is parasiticide and has been used by inhalation in phthisis, but is seldom employed other than as a solvent. formed by the union of carbon dioxide and water, HjCOj. c. acid gas, u. anhy'dride, carbon dioxide, c. ox'ide, carbon monoxide. of von Grauvogel's three constitutional groups, the one in which there is too slow an oxidation of the blood, anoxemia. measure.] device for determining the proportion of carbon dioxide in the air or expired breath by the precipitation of calcium carbonate from lime water. and the proportion of carbonic dioxide by means of the carbo no meter.