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ON A NEW SERIES OF ORGANIC BODIES CONTAINING METALS. 
Mercury Compounds. 
(C2 H3)Hg Methide of mercury. 
(Cg H3)HgI Meth iodide of mercury. 
In naming the new bodies described in the present paper, I have, in conformity 
with the nomenclature of the organic bases, adopted the principle of employing the 
termination ‘‘ ium ” when the body unites with one equivalent of oxygen, chlorine, 
sulphur, &c., like ammonium, and the terminal when, like ammonia, it com- 
bines with two additional atoms. 
