The London, Edinburgh and Dublin philosophical magazine and journal of science . a dry hard mass is obtained. As this is soluble in aniline,only a slight excess of the latter is used. The solid mass is dissolved in aminimum of hot benzol; cooled to about 5°, filtered, and washed with coldbenzol. Amongst its properties are the following :—It fuses at 126° 128° 0. It is very soluble in water, hot and cold • also in hot and coldalcohol and ether; soluble in hot benzol, very sparingly in cold; verysparingly soluble in bisulphide of carbon, hot or cold. Fused on glass, itforms a beautiful crys
The London, Edinburgh and Dublin philosophical magazine and journal of science . a dry hard mass is obtained. As this is soluble in aniline,only a slight excess of the latter is used. The solid mass is dissolved in aminimum of hot benzol; cooled to about 5°, filtered, and washed with coldbenzol. Amongst its properties are the following :—It fuses at 126° 128° 0. It is very soluble in water, hot and cold • also in hot and coldalcohol and ether; soluble in hot benzol, very sparingly in cold; verysparingly soluble in bisulphide of carbon, hot or cold. Fused on glass, itforms a beautiful crystalline film, the crystals being several inches is anhydrous. In another preparation, 1 part of pyrogallic acid wasdissolved in 4 parts of water at 50°. Aniline was added until a specimenbecame cloudy on cooling. It was cooled to about 10° and filtered throughwet paper. It was then evaporated to about half its bulk and dried invacuo over sulphuric acid. It turns brown on exposure to the air. 110 Frederick Guthrie on Salt-SolutionsFi<?. 2.—Aniline and Attached Water. Ill Infinite Solubility. § 249. An examination of curves of solubility of salts inwater, drawn so that the ordinates are temperatures and theabscissae are percentages, reveals two types of curves, whichdiffer only essentially in their right-hand or salt-saturatedbranches. Iodide and bromide and, perhaps, chloride ofsodium may be taken as the type of a, fig. 3, and nitre of bffig. 3 (see § 126). The curvature of the right-hand branchesof both curves must diminish as we travel from the cryohy-drate in the direction of the arrows, otherwise there would betwo temperatures at which there is the same solubility (a, , dotted lines) for every solubility between certain limits ;or (b, fig. 3, dotted lines) there would be two solubilities forevery temperature between certain limits. If we concede the Fig. 3.
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