76 Scientific Intelligence. 
A 
the above mixture may be inflamed by the blow of*a hammer. 
= 
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s 
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ee 
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NH 
+H,, forming ammonium cyanide. This desulphuring action of 
alecohoiic potash gave ammonia and crotonic acid.— Ber. Berl. 
Chem. Ges., xv, 2505, Nov., 1882. G. F. B. 
Electromotive Force.—It has been maintained by Exner that 
“s results, The latter employed a cell with zine and plati- 
num as elements, with iodine or bromine as the liquid. Notwith- 
* 
standing the fact that iodine and bromine are elements and can- 
current results whether the different metals are immersed in ap 
electrolyte or not, as long as the liquid can conduct electricity. 
