. 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. he platinumtest. Confirm Tartaric or Citric Acid.—To slightly acidified potash filtrateadd ammonia in slight excess and considerable quantity of ammo-nium and calcium chlorides. Tartrates are precipitated completelyin the cold with agitation and rest for about ten minutes. To thesolution (or filtrate, if tartrates are present) add three volumes ofspirit of wine, when citrates are precipitated. If
. 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. he platinumtest. Confirm Tartaric or Citric Acid.—To slightly acidified potash filtrateadd ammonia in slight excess and considerable quantity of ammo-nium and calcium chlorides. Tartrates are precipitated completelyin the cold with agitation and rest for about ten minutes. To thesolution (or filtrate, if tartrates are present) add three volumes ofspirit of wine, when citrates are precipitated. If sulphates havebeen found, disregard a slight precipitate with spirit of wine. Compiled hy A. Senier. ,-f. Analysis OF ORDINARY SCALE COMPOUNDS. i eonviitril pvinphospliuriLi. Ammoxium (often a :l cnlltulniliiitiou). Fekkic salt. Potassium. Sodium. DIhmiIvi .1 i «;!• i. iilkuluiiU (excepl iiml wiiiiHrmixture ivilli :i lillle ether, xep,i,]niii | nollili mil in* E IEA1 ! i JTaj contnh in bobo I- oliilii GllEKN lllllllle iquln) Bolutloi is am ? ,| .1 Hi,- „ ll I prarliitlnli ?/>.... nol ,, Jlno, Ptoothoi !.. Kht preeipitate witli_ spirit of wine. Compiled ty A. Skxikr. 545 boiling-point; the albumen becomes insoluble, separating inclots or coagula of characteristic appearance. Other Reactions.—Add to small quantities of aqueous solu-tion of albumen solutions of corrosive sublimate, silver nitrate,copper sulphate, lead acetate, alum, stannic chloride ; the vari-ous salts not only coagulate, but form insoluble compoundswith albumen. Hence the value of an egg as a temporaryantidote in cases of poisoning by many metallic salts, its ad-ministration retarding the absorption of the poison until thestomach-pump or other means can be applied. Sulphuric,nitric, and hydrochloric acids precipitate albumen; the coag-ulum is slowly redissolved by aid of heat, a brown, yellow, orpurplish-red color being prod
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