149 



. A double pliosphato of Brucia and soda was also formed, but could 

 not be obtained perfectly pure. 



Phosphate of Quinine, with three equivalents of Quinine. By 

 digesting quinine with phosphoric acid, a solution of this salt is 

 obtained, which becomes a solid mass of silky needles on cooling. They 

 are extremely soluble in hot water, and are quite neutral to test- 

 paper. They gave, by analysis, a result corresponding with 

 3(C,oH,,NO.,HO)POj 

 These results the author considered sufficient to establish the fact, 

 that the phosphate of the organic alkalies agree in their constitution 

 with the inorganic salts of that acid ; and he concluded his paper by 

 observing, that the relations of these bases to phosphoric acid might 

 be made use of as a means of classifying them. Thus quinine, which 

 replaces three equivalents of water in phosphoric acid, might be com- 

 pared to oxide of lead and the oxides of the heavy metals. Brucia 

 might represent the inorganic alkalies. While strychnia, which, 

 under ordinary circumstances, replaces only one equivalent of water, 

 belongs to a class which has no analogue among the series of inor- 

 ganic bases. 



The following Donations to the Library were announced : 

 Annals of the Lyceum of Natural History of New York. "Vol. IV., 



No. 67. 8vo. — 5y the Society/. 

 Address delivered at the Anniversary Meeting of the Geological 



Society of London, on the 19th February 1847. By Leonard 



Horner, V.P.R.S., President of the Society. 8vo. — Bi/ the 



Author. 

 Proceedings of the American Philosophical Society. Vol. IV., No. 



34. 8vo. 

 Transactions of the American Philosophical Society, held at Phila- 

 delphia, for Promoting Useful Knowledge. Vol. IX., Part 3. 



— By the Society/. 

 A Treatise on Atmospheric Phenomena. By Edwaixi Joseph Lowe, 



Esq., 8vo. — By the Author. 

 Annales de I'Observatoire Royal do Bruxelles. Tom. V. — By 



M. A. Quctclet. 

 Memoires Couronnes et M^moires des Savants Etrangers, par I'Aca- 



demie Royale de Bruxelles. Tom. IX., 1845 et 1846 ; Tom. 



XX., 1840, 2 Parties; Tom. XXI., 1846. 4to.— By tJts 



Academy. 



