tees E F. Smith— Decomposition of Chromic Iron. 
Akt. XX7A new method for - ante of Chromic 
fron > by Epear F. Sur 
» Recen*ry I was’ led to try the action of bromine and sodium 
hydrate Hy nae fuivétibed chromic iron, and as the amount of 
un extracted in this manner was rather surprising, the 
ia followin oi dx penitent were made, to ascertain a effect. bro- 
: mine aloe would have upon the same substan 
» L Mocerate rately fine chromic iron (+1500 sine was placed in 
a tube o hard ‘and after adding dilute bromine water and 
roles | the tube, the latter was placed in an ai ir-bath and << 
a twele Bi 2, at a temperature about 180° C. When cool 
thet its contents sear upon a “filter. 
- The tubhele jeaided was théroughly washed by decantation, 
oe and upe the filter, with hot water. The filtrate after concen- 
peal vas treated yf a slight excess of ammonium hydrate, 
; he -precipi of aluminum hydrate, etc. The Jat- 
solored filtrate then vs 
Panag 
The predpitate formed, after protracted digestion, was sltdveod 
to settle key the dei ar Itered. After washing, the pre- 
was'"dissol lved few drops of dilute Agee 
cid an ‘ecipita “Operation was repeated and the 
recipit 5 ‘Ynally transferred to a filter, washed, dried and 
ed. The amount of ahresne pete found | ereee 
