on the Amietnin- ciel Bases. 323 
0620 grs. gave 0:2577 grs. sulphate of cobalt = 15-82 per cent cobalt. 
11402 grs. gave 0:4756 grs. * 7. ieee. = * 
15317 grs. gave 1:9270 grs. sulphate of baryta = 4819 sulphuric acid 
15843 ors. gave 0°7570 grs. water ‘== 531 per cent hydrogen. 
11869 grs. gave 189°5 ¢.c. nitrogen at 15° C. and 775=m-2 (at 1593) = 179°6 
¢.c, at 0° and 760™m = 19-00 per cent nitrogen. 
The formula requires 
Egs. Calculated. Found. 
Crap errr 
Cobalt, - - 2 15°81 15°82 15°86 
Sulphuric acid, - 2 42°89 43°19 
ydrogen, - 20 5°36 5°31 
Nitrogen, - - 5 18°76 19:00 
hi 
W. 
t of the following formule, besides that already given: 
ral hours with 
r red solution is 
¢ form: These 
8 are soluble in hot water without decomposition, and may 
