_ *a little acetic acid.” It is easily seen that 
202 S. P. Sadtler on Fischer's Sait. 
S90, instead of N20; and becomes likewise 2(€o0S®.), The 
first loses and atom of N@2z which the second does not.. We 
awn from them, before summing up my ar 
examine how the results of Stromeyer, Erdmann and Braun 
compare with my own. In the first case I think the last argu- 
ment drawn from the similarity of weights of double nitrite = 
iff 
t 
“acid salt” and the yellow “neutral salt” would give figures 
his. ann’ 
To sum up briefly, the reasons for regarding Fischer's salt as 
a potassio-cobaltic nitrite, having the essential formula 
alysl 
4th. The Sraation of substitution compounds exactly analo- 
gous to well known salts is proved by pe es : 
5th. The analogy of Fischer's salt to double cyanids, chlorids 
and nitrites proved to contain a similar hexatomic atom. 
_ 6th. The difference of ratio between the weights in the pro 
ir ay and sesquioxyd salts is marked and constant phen 
.ccepting these proofs, we will sum up with equal brevity 
the formulas of thie salts analyzed on shia view Ps : 
“s 
