80 PROCEEDINGS OF THE AMERICAN ACADEMY 



10. Nontl Hydride = C 9 H 20 . 

 Specific gravity 0.7555 at 0° ; 0.7447 at 15°. 



Determination of Boiling-point. 



Observed temperature of the liquid at commencement 



of distillation 148°. 7 



Observed temperature of the liquid 15 minutes later 148°. 7 



" " " 15 " " 148°. 9 



" " " 5 " " 149°. 1 



a k a 13 " " 149°. 4 



u a a 2 " u 149°. 7 



Average of observations 149°. 2. Corrected boiling-point 150°. 6. 

 Average of two determinations 150°. 8. 



Analysis. — 0.1841 grin, of the substance gave 0.5765 of carbonic 

 acid, and 0.2526 of water. 



Calculated. Found. 



Carbon £ 9 108 84.375 85.40 



Hydrogen H 20 20 15.625 15.24 



100.000 100.64 



Determination of Vapor Density. 



ination of a Hydrocarbon Naphtha, obtained from the products of the Destruc- 

 tive Distillation of Lime-soap, Memoirs of the American Academy, 1865 (N. S.), 

 IX. 177] say H[ydride] of Cfapryl] boils at 128°, near bottom of page 195, 

 and elsewhere ? [i. e. page 194]. Perhaps I should call the ' 8 bodies ' [viz. those 

 boiling at 8°, 38°, and so on] hydrides, and the ' 10 bodies ' [boiling at 0°, 30°, etc.] 

 iso-hydrides? See Schorlemmer's late work, and compare with Wurtz's bodies 

 from amyl alcohol." It appears, however, that this hesitancy was but momen- 

 tary, for, as is to be seen above, on pages 70, 71, he finally accepted Frank- 

 land's hydride of amyl, boiling at 30°, as the prototype of the normal hydrides, 

 and relegated the substance boiling at 128° to the second series, of which it is 

 the last term. Note by F. H. Storer. 



