on the Ammonia-cobalt Bases. 253 
SNH: .Co203, 3NOs +2HO 
a8 the following analyses indicate : 
0'8265 grs. gave 0:3708 grs. sulphate of cobalt = 17-05 per cent cobalt. 
05275 grs. gave 02870 gers. ei “ “ 
08012 grs. gave 217°8 c.c, nitrogen at 1195 O. and 761™™-48 (at 11°40.) = 
206°05 c.c. at 0° and 760™™ == 32°30 per cen 
07667 ers. gave 207 ¢.c. of nitrogen at 14° 0. and 766"56 (at 14°20.) = 
194-91 cc, at 0° and 760™™ = 31:92 per cent. 
The formula requires 
Eqs. Calculated. Found. 
ee eS oe 16-95 1705 1709 
Nitrogen, - - 8 3218 . 8230 81°92 
It is true that the analyses here agree with the formula as well 
cobalt and nitrogen being as 1 to 4, or 2to 8. We 
‘o this point at another time. 
