~ 
184 Intelligence and Miscellanies. 
naked eye, or easily rendered so by a slight degree of fric- 
tion with my finger; the pressure attending which could 
only have brought already existing uncombined particles 
within the sphere of each otier’s attraction, When calome 
(protochloride of mercury) is decomposed by an alkaline so- 
lution, if the latter be cautiously dropped upon it, a reddis 
owder is at first apparent. his fact and the subsequent 
evidence of the existence of metallic mercury in the powder, 
may serve to explain each other. A muriaie of the alkali is 
formed at the expense of a portion of water, and the oxy gen 
being left to the free exercise of its affinity, forms with half 
peracetate. 
I do not know that more conclusive evidence of an error 
in the atomic weight of any body could be adduced. An- 
nexed is a table of the corrected atomic weights of a few of 
the mercurial combinations. 
Samuet Axuinson, Jun. 
Philadelphia, 11mo. 11th, 1828. : 
Proportions by| Atomic Atomic 
Fr 
analysis. roportions. | Weights. 
Suboxide, - - - - |100M+40z7)2M+10z} 208 
dayalte 4 0oM+s8sO0z|iM+10Ozr; 108 
Oxide, - 
Sons: - + = = |100M+18ch|2M-+-1ch | 236 
Y - - = = $100 36ch\1M+1ch 136 
ubiodide, - - - - |100M+62I |2M+1I j 324 
Tr) — ST) ~~ 
Ws © 
ide, oe a OD 1241} !1M-+1I 224 
subsulphuret,- - - - |100M+8s |iM+1s 216 
Sulphuret, - - - - |100M+16s |{M+lIs 116 
Cyanide, - - - = |100M+26c jiM-+1c 126 
protonitrate of mer h muriai ch was repeat h 
with warm distilled water, with solution of muriate of ammon with warm 
= pped a small quanti t h powder was 
very distinctly observabl hen sufficient alkali was added to decompose 
pee ee # wa 1 color, and when dry contain- 
ad Vi globules of metal. is shows the fallacy of one of the reputed tests 
for the purity of calome!. . ! 
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