299 
lected on a filter and ses a strong calcination weighed 
2.25 grammes. It was then calcined with caustic potash 
ina silver crucible, no cameleon having been — 
Manganese was not present, the mass was treated ith 
water, the solution being of a light brilliant yellow color, 
indicated a trace of oxide of chrome. The residue, which 
was not dissolved by the © Palas. being ceperaiee from the 
solution, and again acted on by th ne alkali, was found free 
rom Alumina and Phosphoric acid. This jada was 
dissolved in muriatic acid, the solution was supersaturated 
with ammonia, the filtered liquor was tested for lime 
With oxalate of potash, but none was detected ; therefore, 
the residue was nee of iron, it weighed 2.11 grs. on 
3 grs., or 70,333 
The alcaline anor was supersaturated with muriatic 
acid, after ebullition it was treated with caustic ammonia, 
there was formed a iene he sf Leneepiete of Alumina, 
weighing 0.05 grs., or 1.666 per 
After the separation of the etait of alumina, the 
liquor was treated with muriate of lime, the phosphate of 
lime thus formed weighed 0.145 grs., pauirslen’ to 0.0806 
grs. of phosphoric acid on 3 grs., or 2.686_ 
D. The liquor (C) from which the Pe sate by the 
subcarbonate of ammonia was separated, was tested suc- 
cessively with oxalate of potash and phosphate of soda anc 
ammonia, but neither lime nor magnesia was present. 
The constituents of this iron ore are, per 100 parts, 
A. genes 19.833 
B. Arg y -. 3.333 
C. Beatie of Iron, 70.333 
C. Phosphateof Alumina, 1.666 
C. Phosphoric Acid. 2.686 which combines with 
(1.936 of oxide of iron. 
97.851 a 
‘ 100.000 ‘ 
9.149 
as | ‘ee. 
