198 S. P. Sadiler on Fischer's Salt. 
€o,, 6NOG,+€0,12NH,, 6NO,+H; 0. 
The following are the analytical results: 
5627 gr. salt gave 3471 gr. CoSO,—29°85 p.c. CoG—33-03 p.c- 
a. .; 
°2867 gr. salt gave 1770 gr. CoSO,—29°87 p.c. CoO—33'06 p.c. 
€o,6,. 
5834 gr. salt gave 176°88 ce. nitrogen at 3° and 661-29 mm. = 
“19 p.c. N.=19°91 p.c. NH, and 44:50 p.c. N, 95. 
_ 10866 gr. salt gave with €u+€u0+Ppbcro ,-3 745 gr. 34°46 p. ¢. 
H,0=32-09 p. c. from NH,+-2°37 p.¢c. H, 6. 
€o2, 6NO,+€o,12NH,, 6NO, +H 42: 
F 
or, p. p. ¢ 
€0,0, 32°87 33°04 
NH, —20-20 19°91 
N,0,—45°15 44°50 
H,O0— 1°78 2°37 
I now tried chlorid of purpureo-cobalt upon some of the same 
solution and got a roseo-cobalt compound, exactly analogous 
to that of luteocobalt, its formula being— 
€0,6N0,+€0,10NH, 6NO,--H, 0. 
The following were the analytical results : 
3186 gr. salt gave 1974 gr. €oSO,—29-98 p.c. €oO—33°18 p. @ 
€o,9,. : 
€o,, 6NO,+€0,10NH,, 6NO,+H,9. 
Theor. p. ct, Found p. ct. 
€0,0,—34-02 33°18 
This salt is not nearly as insoluble, however, as the Iuteocobalt 
salt and but a little of it could be obtained. At first I got it as 
a yellow and very crystalline salt on the sides of the beaker, after _ 
ng some little time. The crystals examined under the 
microscope were beautifully defined monoclinic prisms pit 
terminal planes. The portion I analyzed had more of the co. 
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