270 PROCEEDINGS OF THE AMERICAN ACADEMY. 



96M00' 116-120"' 130-140 L48°-160° 15-< -102^ 1GS-172 3 190M94 D 



34 25 85 W CO 20 40 Grms. 



The lower portions of this oil began to come over at 45°, but only 

 small quantities collected below 6.0°. At 6o c -70°, 40 grms. collected, 

 which will be examined in connection wiih the similar distillates from 

 the other oils to ascertain whether the principal constituent is hezane 

 or hexamethylene. The high specific gravity of this oil, even after 

 treating thoroughly with fuming sulphuric acid, 0.7017, would seem to 

 exclude hexane; specific gravity, 0.6671. 



Kept AM ETHYLENE, C T II 14 . 



The unpurified fraction 96°-100° gave as its specific gravity at 20°, 

 0.7395, and after treatment with fuming acid, 0.7384. The slight change 

 in Bpecific gravity indicates that this fraction consists for the most part 

 of one hydrocarbon, and analysis with the boiling point shows that the 

 hydrocarbon is heptamethyleue ; specific gravity, 0.7420 : — 



0.1 173 grm. of the oil gave 0.4G20 grm. CO., and 0.1879 grin. 11,0. 



Calculated for C ; II, 4 . Found. 



C 85.70 85.54 



II 14.30 14.18 



OCTONAPHTENE, C 8 H 16 . 



The specific gravity of the fraction 116°— 120° was 0.7('2">. and after 



treatment with fuming sulphuric acid, 0.7."iGfi, which indicated that this 



product contained very little of the benzol homologies. An analysis 



r purification gave proportions of carbon and hydrogen required for 



octonaphtene : — 



0.1780 grm. of the oil gave 0.5572 grm. CO.. and 0.2287 grm. II..O. 



I ilculated for C 8 II I0 . Pound. 



C 85.70 85.39 



II 11.30 14.28 



Fraction 150 -152 . 



Tie- distillates above 120° received no further attention, except to 



rtain that the xylols were present in large proportion, as in the other 



oils. To ascertain whether uonane is contained in this oil. the Bpecific 



ity of the. fraction 150 152 was ascertained and found to be 



