C. A. Joy on Glucinum and its Compounds. 83. 
Art. XII—On Glueinum and its Compounds; by CHARLES A. 
Joy, Professor of Chemistry in Columbia College, New York. 
THE distinguished crystallographer, Haiiy, having discovered 
a perfect identity in crystalline form, hardness, and specific 
gravity between the minerals beryl and emerald, requested Vau- 
quelin to subject the former to a careful analysis. Beryl had- 
reviously been analyzed by Bindheim in 1790, with the fol- 
aril: 
owing result: 
SiO, =64, Al,0,=27, CaO=8, and Fe,0,=2.° Total 101. 
_ portion of the beryl, attracted his attention, and the fact that he 
_ could not obtain an alum with it, when its sulphate was mixed 
_ with the sulphate of potassa, lead to the final discovery of glu- 
cina. 
_ Vauquelin did not give a name to the new earth, but left it 
_ to his colleagues to propose one. In consequence of its forming 
_ Salts of a sweetish taste, they called it glucina, from yiuxts, sweet, 
yAvet, sweet wine, yluzaiyw, to render sweet. The German chem- 
ists, however, have preferred the name derylla, from the mineral 
in which it was first found. SB 
_ _Since the days of Vauquelin, a number of minerals containing 
- glucina have been added to the list. The following catalogue 
_ Of these minerals, together with the literature of the subject, is 
_ believed to be tolerably complete. ; capa e 
_ 1. Alezandrite—same as chrysoberyl. 
2. Alvite.—Dana, Sup. iii, 5. Nyt. Mag. f. Nat., xiii, D. Forbes and T. Dahil. 
8. Aqua-marine.—Vauquelin, Ann. de Chim, et Phys., [1], xxvi, 155. Hermann, 
Ann. de Chim.-et Phys. [2], xix, 361. Don Pedros, magnificent _ of, 
British As. f. Adv. Sci., i, 86. Du Menil, Schwgg. J., xxxiv, 454. a, Min., 
178. Rammelsberg, Hdb. d. Min, chem., 553. Hausmann, Min., 603, 887. 
_ 4 Beryl.—Plin. Hist. Nat., xxvii, 5, s. 20. ard, ii, 776. Irenzeus contra hereses 
Ed. Ren. Massuet., 1710, Lib. i, proem. § 2, p. 2. Theophrast. de lapid., $§ 44, 
45,46. Klaproth, Bei i, 9, iii, 215. Werner, 40,41. Haiiy, Traité, ii, 504. 
Gren., J. d. Phys., 
histor. antiquar. Miner. u. Ahnl. Inhalts., 1800, ii, 134. Carl Ritter, Erdkun 
1, Africa, 2 A. 673-677. Beckmann’s Beitr. z. Gesch. d. Erfind., iii, 297. Wilken, 
Gesch. d. Kreuzziige. Beil. 8. Du Menil, Schwgg. J., xxxiv, 454; id. xxxix, 487. 
Fusion of beryl, wge.J., xviii, 237; id, xix, 320. Apatite mistaken for 
beryl (araraw, to deceive). Gilbert, J. d. Phys. xvi, 126 and 250. e 
indb. d. Min., ii, 603. Von , Handb., 391. Beud. Traité, ii, 41, 
Phillips, Min., Brooke and Miller, p. 336. Ausserord, Beilage zur Augsb. Allgem, 
* Ann. de Chim., [1], xxvi, 155, Feb. 15, 1798. 
