72 
ON BICHROMATE OP LIME, ETC. 
From the above it is seen that it is useless to prepare the 
bichromate of potash in order to obtain the insohible chro- 
mates of lead, zinc, baryta, &c., which must render the 
preparation of these products considerably less expensive ; 
they may readily be obtained by decomposing the bichro- 
mate of lime by the acetate or subacetate of lead, chloride 
of zinc, &c. With respect to the bichromate of potash, it 
may be as readily obtained, and in a perfectly pure state, 
by decomposing the bichromate of lime with a sokition of 
carbonate of potash, which will give rise to insoluble car- 
bonate of lime, which is easily washed, and a solution of 
bichromate of potash, which is concentrated and set aside 
to crystallize. — Chem, Gaz. from Comptes Rendus. 
