LEAF TEMPERATURE. 



55 



Following is an example of the calculation for one determination. 

 Table 22. Temperature readirujs for the determination nj leaf -temperature . 



Readings for leaf-temperature determination (equation 3). 



Weight of calorimeter C, stirrer, thermometer, etc 121 .08 gm. 



Weight of C, etc., pkis turpentine ..4 141 .74 



.-. Weight A 20. 6G 



Weight C plus A plus leaves 148 . 97 



.-. Weight of leaves 2.23 



Temperature Ta 18 . 70 



Temperature Tc. 19.20 



Temperature of air 19.0 



Readings for specific heat of leaves (equation 2). 



Weight C, plus A, plus leaves, plus turpentine B 158.48 gm. 



.-. Weight B 14.51 



Temperature Ta 15 . 30 



Temperature Tc 21 .60 



Temperature Th 28.84 



Temperature of air 17.7 



