XUK KKSI'li; \ rioN OF Al'I'I.KS. 91 



In order to have a coninion basis for comparinfr one ex- 

 periment with anothei", the results were all recalculated for 

 one kilogram of fruit and one hour of time in milligrams of 

 carbonic acid. There were two different seasons in which 

 the experiments were carried on. In the first season, tem- 

 peratures above that of melting ice were not closely regu- 

 lated but were allowed to vary several degrees as in 

 ordinary practice. In the second season the temperatures 

 were held closely at the points selected for comparison 

 and the runs were of equal lengths of time. 



The results of the first season are given in separate tables 

 below. 



Carbonic acid exhaled by 1 kilogram of apples in 1 hour at summer tem- 

 peratures, 65^ to 77° Fahrenheit: 



October 16, 8V2 hours, 16.4 milligrams. 



October 17, 8 hours, 18.7 milligrams. 



November 5, 6Vi hours, 12.6 milligrams. 



November 6, 6^;. hours, 12.6 milligrams. 



November 12, 614 hours, 18.2 milligrams. 



December 9, 5 hours, 18.0 milligrams. 



December 10, 6 hours, 17-9 milligrams. 



December 11, 61/2 hours, 23.0 milligrams. 



December 12, 6i'2 hours, 26.7 milligrams. 



February 26-28, 47 hours, 17.9 milligrams. 



The average rate of exhalation of carbonic acid at sum- 

 mer temperature was 18. milligrams per hour for one kilo- 

 gram of fruit. 



Carbonic acid exhaled by .1 kilogram of apples in 1 hour at cellar tempera- 

 tures, 40° to 50° Fahrenheit: 



October 22, 5 hours, 8.0 milligrams. 



November 7, 6 hours, 7.3 milligrams. 



December 2, SVb hours, 8.7 milligrams. 



December 3, 6V2 hours, 9.5 milligrams. 



December 4, 6 hours, 8.8 milligrams. 



December 5, 7V2 hours, 79 milligrams. 



December 6, 5V2 hours, 9.6 milligrams. 



March 16-18,48 hours, 5.5 milligrams. 



The average rate of exhalation of carbonic acid at cellar 

 temperature was 8.1 milligrams per hour for one kilo- 

 gram of fruit. 



Carbonic acid exhaled by 1 kilogram of apples in 1 hour at temperature of 

 melting ice, 32° Fahrenheit: 



October 29.22 hours, 2.3 milligrams. 



October 30, 6\j hours, 2.6 milligrams. 



November 8, 8 hours. 3.8 milligrams. 



March 2-4,461/2 hours, 2.4 milligrams. 



March 4-7, .55% hours, 2.8 milligrams. 



March 9-11,48 hours, 2.2 milligrams. 



The average rate of exhalation of carbonic acid at the 

 temperature of melting ice was 2.7 milligrams per hour 

 for one kilogram of fruit. 



The results of the second season are given in the same 

 form as for the first. 



