will facilitate this operation. 
fi he 
J. L. Smith on the use of Bisulphate of Soda in analysis. 249 
agent to fuse with aluminous minerals, as corundum, em- 
searches I had a large number of corundums and emeries to an- 
alyze. The powdered minerals were fused with the bisulphate of 
WwW 
capsule, is then broken up and put into a glass stop- 
pered bottle. So far as my experience has yet gone, in almost 
every instance where we have been in the habit of using bisul- 
phate of potash, the bisulphate of soda can be substitu 
2 See this Journal, vol. x, 1850, and vol. xi, 1851. 
Am, Jour. Sct.—Szconp Sertms, Vou. XL, No. 119.—Szpr., 1865. 
32 
