DR. E. FRANKLAND’S RESEARCHES ON ORGANO-METALLIC BODIES. 
275 
I. Fuming sulphuric acid did not reduce the volume of the gas. 
II. Pressure of gas used 31*04 
Pressure after admission of oxygen . 346*80 
Pressure after combustion .... 268*92 
Pressure after absorption of CO 2 . . 207*1 1 
These numbers agree very nearly with those yielded by the combustion of pure 
hydride of ethyl, one volume of which consumes 3*5 volumes of oxygen and generates 
two volumes of carbonic acid. 
Vol. of combustible gas. 
Vol. of oxvgen consumed. 
Vol. of carbonic acid generated. 
31*04 
: 108*65 
: 61*81 
1 
: 3*5003 
: 1*991. 
Zincethyl is similarly decomposed by the hydrated acids and by the hydrogen com- 
pounds of chlorine, bromine, iodine, fluorine and sulphur. 
I cannot close this memoir without thanking my late assistant, Mr. C. J. Tuffnell, 
for the aid he rendered me in several of the determinations mentioned above ; his 
extreme accuracy and delicacy of manipulation enabled him to afford me very valu- 
able assistance. 
2 p 
MDCCCLV. 
