Foreign Literature and Science. 187 
ni; christianite, dedicated to Prince Christian, of Denmark, 
and bzotine, from the distinguished French philosopher. 
Bul. Univ. Av. 1826. 
3. Gay-Lussite.—A mineral thus named, in honour of the 
distinguished co-editor of the Annales de Chemie et de phys- 
ique, was found by the enlightened French traveller, J. B. 
Boussingault, at Laguilla, a small indian village on the S. W. 
of the city of Merida, in Colombia, in crystals, disseminated 
in clay. Its analysis proves it to be a double carbonate, with 
bases of lime and soda, constituting a new species, analagous 
to Dolomite. It. consists in the 100 parts, of 
Carbonate of lime 32.95 
Carbonate of soda 34.76 
Water 32.29 
mind 100.00 
An. de Chem. Mars, 1826. 
4. Composition of Feldspar and Serpentine.—In a me- 
wir communicated to the Society of Physics and Natural 
History of Geneva, on the 15th of November, 1825, by M. 
Peschier, the author draws the conclusion that titanium is a 
constituent part of feldspar and serpentine, and he points out 
the sources of error in the analysis of Vauquelin, Klaproth, 
as follows: 
ularia 10 per cent. 
~ Green Feldspar of 12° 
Siberia. 
Vitreous F. of Drachenfels 10 
White F. of Auvergne 3.25 
Andalusite of Tyrol 15. . 
The third variety, according to Peschier, contains both 
po the fourth 14.18, and the fifth 4.30 of 
soda, but no potash. The first contains 14, and the second 
10.40 of Potash, but no soda. ; 
The analysis of Serpentine, agreeably to the same chemist, 
is as follows : 
