242 Dr. E. Frankland on a New Series of 



described, and proved it to be a compound of one atom of zinc 

 and one atom of methyle, by the following experiments : — 



I. One of the bulbs above mentioned was opened beneath an 

 inverted receiver filled with recently boiled distilled water ; its 

 contents were rapidly resolved into hydrated oxide of zinc and a 

 permanent gas, which last was submitted to eudiometrical exa- 

 mination ; the following results were obtained : — 



The action of fuming sulphuric acid did not produce any 

 diminution of volume. 



The gas was nearly insoluble in absolute alcohol. 



A eudiometrical combustion yielded the following results : — 



Difference Corrected vol. 



Observed of mercury atO®C. andl 



volume. Temp. level. Barom. metre press. 



Volume of gas used-l 18-7 C. 603-3 747-8 14-86 



(moist) . . J 



Volumeafteradmk- 1287-9 18-7 418-4 747-6 84-39 



479-7 747-4 54-71 



sion of (moist) J ' 

 Volume after explo.1 33 ^g.g 



sion (moist) . J 



^tonofcO^K)}!^^-^ 18-6 519-4 747-5 40-19 

 Volume after admis-l 549.4 jg.^ jg^.^ ^^^.g g^^.^^ 



Sion 01 H (dry) J 

 Volume after explo-1 435 g ^ g ^^.^ 



Sion (moist) . J 



In order to ascertain whether the gas was a single compound 

 or a gaseous mixture, and also to determine its specific gravity, 

 it was submitted to diffusion in an apparatus which I have 

 already described* : the following results were obtained : — 



I. In Diffusion Eudiometer. 



Difference Correctedvol. 



Observed of mercury at 0° C . and 1 



volume. Temp. level. Barom. metre press. 



Volume of gas U8ed-^^^3.Q ^g.^^ --^ ^^^ ^^^,^^ 

 (dry) . . . 



Volume after diffu- 

 sion (dry) . . 



\ 144-3 19-2 46-3 740-8 93-63 



* Quarterly Journal of Chemical Society, vol. ii. p. 283. 



