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Sweet Spirit of Nitre

This is an alcoholic solution of nitrous ether. The mixture should have, according to the U. S.

Pharmacopcia, a specific gravity of .837. It becomes acid by age. water should dissolve only to its volume of 4290. Hydrochloric Ether. This is ether, and remain transparent. Dry carbon- the chloride of ethyl, and is distilled in a ate of potassa or tannin shaken with ether in retort, from rectified spirit of wine saturated a test-tube will become moist or form a syrupy with dry hydrochloric acid gas. (Thénard solution, in case any water is present. The directs equal volumes of concentrated hydropresence of alcohol is shown by shaking the ether with water, its solubility in water being the greater in direct proportion to the quantity of alcohol which it contains. chloric acid and absolute alcohol.) The retort is connected with a Wolffe's apparatus, the first bottle of which should be two-thirds full of tepid water (70° to 75° Fahr.), and the remainder surrounded with salt and ice. To has the odor of quince, and dissolved in a due render it perfectly anhydrous, it must be proportion of alcohol, forms quince essence. digested on a few fragments of fused chloride of calcium. (Cooley.)