S. P. Sadtler on Fischer's Salt. 193 
The nitrogen was determined, either together with the H,¢?0 
by Gibbs’s modification of Bunsen’s method, which will be again 
alluded to, or directly by volume with the Sprengel- ump. 
The H, ® either as above, or by combustion with €u ina 
stream of =o. 
The analytical data and results are appended. 
Preparation No. 1. 
"2011 gr. salt — 1732 gr. €o,K,550,—44'75 p.c. Co8-+K, 8 
gave 0656 gr. €CoSO,—15°78 p.c. CoO=17°47 p.c. 
109 
1626 gr. salt gave 1403 gr. €o,K.550,—44'83 p.c. CoO +K,0 
0529 gr. CoSO,=15°74 p.c. CoO=17°42 p.e. 
Oe 3° 
5147 er ae fr 1ig7 & nitrogen at 15°25° and 483°2 mm. pres. 
ce. N=44 
9410 or. salt ae 167°6 ce. et at “15 ‘25 and 601°6 mm. pres. 
=16°76 p.c. N==45°48 p. ¢. 
ae en salt gave —_— er. H, o=7 00 P.c H, 20. 
"34 937 ¢ 6°9 
Preparation No. 2. 
1082 gr. vo = 0955 gr. ©o,K,550,—45'86 p.c. Co8-+K,90 
also 0408 gr. 080, —16'16 p-c. €oO8=17°88 p.c. 
Sey 
“1222°gr, salt gave ‘1974 gr. €o,K, et eeghay p.c. Sot Bae 
also 0455 gr. €oSO,—=15°96 p.c. CoO—17°66 p.c. 
“4192. gr. salt ‘gave 102°83 ce. nitrogen at 18°25° and 462°6 mm. 
pres.=17°57 p.c. N.=47-70 p. c. N, 
bh gr. salt gave 
0846 gr. H, O=5°46 p. c. “4 
3104 “ «© 9996 gr. H,O=5'39 p.c. HO: 
myptben No. 3. 
5889 gr ealt gave ‘5940 gr. 60,K,680,= 
‘ 0740 aes = c. sp pivicens "83 2 €o0 < 
gr.=17'80 p.c. i.e ae 8,0. 
Au. Jour. Sct.—Seconp Series, Vo. XLIX, No. 146. —Maxcz, 1870. 
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