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This historic book may have numerous typos and missing text. Purchasers can usually download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1861 edition. Excerpt:...a method (Ann. Cfo/m. el Phys. xliv. 26), for the separation of alumina and glucina, but which does not answer for analytical purposes, as chemically pure zinc is only acted on with great difficulty by these sulphates. Sulphate of glucina is formed by dissolving the carbonate in dilute sulphuric acid, the evaporated liquid depositing it on cooling. It is essential to keep the liquid distinctly acid; it assists the crystallisation, and besides, if we were to dissolve the carbonate in it until the liberation of carbonic acid ceased, we should obtain a basic uucrystallisable salt. According to Awdejew the formula of this salt is G10, S0 + 4HO. Double eulphate of glucina and potash.--This salt was discovered by Awdejew; he obtained it while endeavouring to produce the double sulphate of glucina and potash corresponding to common alum (which, had he succeeded, would have been one of the best proofs of the analogy existing between alumina and glucina). It is obtained iu crystalline crusts, by evaporating a solution containing 15 parts of sulphate of glucina to 14 parts of sulphate of potash. The concentration is stopped as soon as the liquid becomes turbid; at the end of a few hours this salt is deposited, which is purified by recrystallisation. It is precipitated as a crystalline powder by the addition of sulphuric acid to the concentrated solution. It is but little soluble in the cold, much more so, though slowly, in hot water. By the action of heat it first fuses in its water of crystallisation, then is decomposed entirely into glucina and sulphate of potash, if the heat is strong and long enough applied. Its composition is represented by the formula GIO.SO + RO.SO3 2HO. Carbonate ofglucina.--Glucina is soluble in carbonate of ammonia. When..