DR. E. FEAJNTKLAND’S RESEARCHES ON OROANO-METALLIC BODIES; 405 
hydride of ethyl, equivalent to -0262 grm. of ethyl, or 11*55 per cent. The analysis of 
the salt formed is still required to corroborate this result. 
II. Action of Zincmetliyl upon Iodide of Stanethyl. 
The successful substitution of the second equivalent of iodine in stannic iodide by 
ethyl, led me to hope that it might in like manner be replaced by methyl, amyl, or any 
other homologous radical, thus forming a stannic compound containing two radicals of 
different composition. To establish this point, I submitted iodide of stanethyl to the 
action of zincmethyl. About three ounces of the crystallized iodide were gradually 
added to a solution of zincmethyl in ether, care being taken to preserve an excess of 
zincmethyl; considerable heat was evolved, and the vessel in which the reaction was 
performed required to be plunged into cold water. On distilling the product, it began 
to boil at 40° C. ; and the whole of the volatile portion passed over below 140°, leaving 
iodide of zinc in the retort. The distillate, on being treated with dilute acetic acid, 
effervesced strongly, owing to the presence of zincmethyl; at the same time a dense 
layer of an ethereal liquid separated. This latter, after being washed with six or eight 
times its bulk of water, was dried over chloride of calcium. On rectification some ether 
came over at 65 ; but the thermometer soon rose to 143°, between which temperature 
and 148° C. a large portion distilled. The last drops came over at 150° C. The section 
which distilled between 143° and 148° was taken for the following experiments: 
I. 2985 grm., burnt with oxide of copper and free oxygen, gave *3823 grm. carbonic 
acid and *2097 grm. water. 
II. *2888 grm. gave *3733 grm. carbonic acid and *2120 grm. water. 
III. 0678 grm., decomposed in a sealed tube with nitric acid, gave *0495 grm. bin- 
oxide of tin. 
These results indicate the formula 
SJC-H. 
IC.H, 
I- II. III. Mean. 
Q. . 
. 36 
35*01 
34*92 
35*26 
35*09 
H 3 . 
8 
7*78 
7*81 
8*15 
7*98 
Sn. . 
. 58*82 
57*21 
57*38 
57*38 
102*82 
100*00 
100*45 
The action of zincmethyl upon iodide of stanethyl may therefore be thus expressed : — 
The new body thus formed, and for which I propose the name stannic ethylomethide, 
is a colourless, limpid liquid undistinguishable in appearance from stannic ethide. It 
MDCCCLIX. 3 H 
