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This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1860 Excerpt:...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 in 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' + KO,SOa 4 2HO. Carbonate of glucina.--Glucina is soluble in carbonate of ammonia. When the solution is boiled, carbonate of ammonia is driven off, and a precipitate of carbonate of glucina is formed, the composition of which seems to be 3G1O,CO' + 5HO; but if we arrest the boiling as soon as the solution becomes turbid, we obtain a solution of a double carbonate of glucina and ammonia, from which, by the addition of alcohol, this salt is deposited in clear crystals. Double carbonate of glucina and ammonia is white, very soluble in cold water, but is easily decomposed by hot water, liberating carbonate of ammonia and depositing carbonate of glucina. It is much less soluble in dilute alcohol, and nearly insoluble in absolute alcohol. It is easily decomposed by heat, leaving as a residue pure glucina. It is also decomposed by exposure to the air after some time. According to Debray t...