OF ARTS AND SCIENCES. (O 



during the space of thirty-six minutes. Its corrected boiling-point 

 is 61°27. 



Analysis 1. — 0.1808 grm. of the substance gave 0.5561 of car- 

 bonic acid, and 0.2G98 of water. 



Calculated Found. 



Carbon € 6 72 83.72 83.884 



Hydrogen H 14 14 16.28 16.580 



100.00 100.464 



Analysis 2. — 0.226 grm. of the substance gave 0.6968 of car- 

 bonic acid, and 0.3291 of water. 



Carbon 84.089 



Hydrogen 16.181 



100.270 



Determination of Vapor Density. 



Temperature of balance 17° 



Temperature of oil bath 121° 



Height of barometer 764 mm. at 10° 

 Increment of balloon 0.3666 



Capacity of balloon 238 c.c. 



Vapor density found 3.0528 



Theory C B H U = 4 vols. 2.9735 



5. Hextl Iso-Hydride = C G H 14 . 

 Specific gravity 0.689 at 0° ; 0.6772 at 15°. 



Determination of Boiling-point. — Conducting this experiment 

 precisely as the preceding, the observed temperature of the liquid 

 at the commencement of distillation was 68°. 1, and it remained 

 absolutely constant during the long space of 52 minutes, distilling 

 down to a very small residue, which was left in the retort at this 

 temperature. The corrected boiling-point was found to be 68°. 5. 



Analysis 1. — 0.1363 grm. of the substance gave 0.4214 of car- 

 bonic acid, and 0.194 of water. 



Calculated. Found. 



Carbon € 8 72 83.72 84.43 



Hydrogen H 14 14 16.28 15.81 



100.00 100.24 



