582 



PROCEEDINGS OF THE AMERICAN ACADEMY. 



-0.015° 



-0.003° 

 +0.001° 



-0.017' 



15 cm. iron wire were burned, causing a correction of 



4.1 milliliters of sodium hydrate solution were used, indicating 



nitric acid corresponding to a correction of 

 The correction for graduation of the thermometer was 



Total, 



Therefore the corrected rise of temperature is 



1.621° - 0.017° = 1.604°. 



This would correspond to 1.050° per 1 gram cane-sugar. 



Below is given a table containing all the results with sugar, except 

 the few rejected preliminary determinations. 



Data concerning the Combustion of Sugar. 



Average of 14 determinations, 1.0504°. 



* Under .a pressure of 25-27 atmospheres of oxygen. 



t Combustiona made by L. J. Henderson. All others were made by 11. L. 

 Frevert. 



