358 PROCEEDINGS OP THE AMERICAN ACADEMY. 



0.1467 gram of the substance gave 0.4578 gram CO2 and 0.1950 gram HgO. 



Calculated for Cj^Hj,. Found. 



C 85.23 85.09 



H 14.77 14.88 



The formula was identified by a determination of its molecular weight. 



1.4324 grams of the substance and 8.5282 grams benzol gave a rise of 

 1°.265. 



Calculated for C^^H^^- Found. 



352 354 



Hexacosane, C26H54, B. P. 294^-296° (40 mm.) 



After the seventh distillation, 25 grams collected at 294°-296°, that 

 gave as its melting point 55"-56°, and this was not changed by crystal- 

 lization from ether and alcohol. It gave as its specific gravity above its 

 melting point: 



60° 0.7938 80° 0.7893 



70° 0.7918 90° 0.7879 



The percentages of carbon and hydrogen obtained by combustion cor- 

 responded to the series CnH2n_|_2. 



0.1526 gram of the solid gave 0.4757 gram CO2 and 0.2027 gram HgO. 



Calculated for CjoHj^. Found. 



C 85.23 85.02 



H 14.77 14.86 



The molecular weight found at the boiling point of benzol verified the 

 formula. 



1.6742 grams of the substance and 13.151 grams benzol gave a rise of 

 0°.93. 



Calculated for 021,1154. Found. 



366 365 



OcTOCOSANE, CogHss, B. P. 316°-318° (40 mm.). 



At 316°-318°, 35 grams collected after the seventh distillation that 

 melted at 60°, which was not changed by crystallization from ether and 

 alcohol. A combustion gave percentages of carbon and hydrogen re- 

 quired for the series CnH2n+2. 



