American journal of pharmacy . ed, because mixtures of liquids maybe separated from each other—indeed,even though such a mixture is supposedto have combined chemically. Sulphuricacid and water are accepted as havingrather an intense affinity, and their uniona, blotting paper, b, solution ferric js broken only by a considerable display of sulphate. G, transmitted liquid. . d, ferric sulphate in paper. energy. The mixture of sulphuric acid andwater is as perfectly disintegrated by the bibulous paper as were theother substances named by us. This can be shown by making a dilutesolution of sulphuri
American journal of pharmacy . ed, because mixtures of liquids maybe separated from each other—indeed,even though such a mixture is supposedto have combined chemically. Sulphuricacid and water are accepted as havingrather an intense affinity, and their uniona, blotting paper, b, solution ferric js broken only by a considerable display of sulphate. G, transmitted liquid. . d, ferric sulphate in paper. energy. The mixture of sulphuric acid andwater is as perfectly disintegrated by the bibulous paper as were theother substances named by us. This can be shown by making a dilutesolution of sulphuric acid in water, and allowing it to pass up thepaper, and then pressing a piece of blue litmus paper upon the surfaceof the part of the bibulous paper that is moistened. The litmus willchange to red for a certain distance, defined by a line of demarkationas distinct as that shown by the iron salt. The facts, then, to be presented in this paper are, that— 1st. Liquids can be separated from solids held in solution, without. 1 It must be admitted that such a view is not in accordance with our ideaof a solution. Am. Jour. Pbarm.)Sept., 1884. j Cimicifuga Racemosa. 459 evaporating the liquid or precipitating the solid in an insoluble con-dition. 2d. Liquids can be separated from each other. 3d. Certain chemical combinations even can be broken without call-ing upon such recognized dissociating powers as high or low tempera-ture, or the action of reagents. This dissociating force has been overlooked in many places where,perhaps, it might have been useful. It may have been an unknownfactor in leading to discrepancies in delicate analytical work thatinvolved frequent filtration. There are other points of interest thatwe hope to consider in the future. CIMICIFUGA Milton S. Falck, an Inaugural Essay. Description.—The rhizome is (25 cm.) 1 to 6 inches ormore in length, and from (5-25 mm.) 1 to 1 inch in thickness,horizontal, rather hard, after drying brow
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