Chenustry and Physics. 406 
list, ratio S: K,. Sulphide SK,,+102°2 ; sulphite K,SO,,+272°6 ; 
sulphate SO,K,, +-342:2..—Ann. Chim. Phys., V1, i, 81, Jan. 1884. 
G. F. B. 
2. On the Hyponitrites—Divers and Haca have replied to the 
criticisms of Berthelot and Ogier upon the hyponitrites. The 
latter chemists, finding a low percentage of silver in the silver 
hyponitrite prepared by them, assigned to it the formula Ag,N,O 
’ 
: Crone Gea 
instead of AgNO given by Divers. The former chemists point 
substance analyzed was not thus admixed, and that the formula 
1s antecedently quite improbable. wever, to establish the 
prove upon these results in the future.—/. Chem. Soc., xlv, 78, 
March, 1884, ie G. F. B. 
On Ferric ethylate and colloidal Ferric hydrate-—Grmavx 
has succeeded in producing a colloidal ferric hydrate by a new 
method. If 3-25 grams ferric chloride be dissolved in 25 c.c. of 
absolute alcohol, and a solution of 1:4 grams sodium in the 
sodium chloride is at once forme d dark brown liquid con- 
tains all the iron in the of ferric ethylate with not a tra 
of chlorine. On distilling off the alcohol, a black pasty mass of 
liquid is obtained which presents all the appearance of the colloi- 
dal ferric hydrate described by Grah 
a 
a 
‘sa 
, 
