328 PROCEEDINGS OF THE AMERICAN ACADEMY. 



combustion of this product gave values for carbon and hydrogen required 

 for the series CnHcn* 



0.1511 gram of the oil gave 0.4750 gram CO, and 0.1920 gram H2O. 



The inolecular weight determined at the freezing point of benzol cor- 

 responded to the formula C15H30. 



0.9370 gram of the oil and 24.2115 grams benzol gave a depression 

 0°.910. 



Calculated for CijHjo. Found. 



210 208.3 



This formula was further confirmed by the index of refraction, 1.4480, 

 which gave the following molecular refraction : 



Calculated for C^rjUjo Found. 



G9.05 68.50 



Hydrocarbon Ciell.so, B. P. 164°-1G8° (30 mm.). 



18 grams of the oil collected within these limits after the tenth distilla- 

 tion that gave as its specific gravity at 20°, 0.8249. After filtration at 

 — 10°, and purification with acid, the specific gravity found was 0.8254. 

 The proportions of carbon and hydrogen by combustion indicated the 

 series CqIL,,. 



0.1536 gram of the oil gave 0.4848 gram COo and 0.1945 gram HgO. 



The molecular weight at the freezing point of benzol corresponded to 

 the formula CjoH^.,. 



1.1300 gram of the oil and 20.3767 grams benzol gave a depression of 

 1°.202. 



Calculated for CnJIsj. Found. 



224 226 



