On a Method of Studying Transpiration. 

 Experiment 6 (= 5 continued). — Fig. 6. 



277 



Time. 



Period. 



Eate. 



T. 











°C. 



per cent. 



1.54 p.m. 



i 



10 -6 



16 -1 



94 



2.24 „ 



ii 



20 -8 



16 -3 



78 



2.39 ., 



iii 



24 -7 



16 -3 



72 



3.6 „ 



iv 



30 3 



16 o 



69 



3.17 „ 



V 



34 -6 



16 -2 



67 



3.29 „ 



vi 



41 -7 



17 -0 



59 



3.33 „ 



vii 



43 -5 



17 -0 



58 



100 90 60 70 60 50 



Fig. 6 (Experiment 6). 



In Experiment 6 the air is drying instead of becoming damper, and the 

 " lag " is of an opposite character to that in fig. 2. 



Experiment 7. — -November 15, 1909. P. laurocerasus. Fig. 7. 



Time. 



Period. 



Eate. 



11.30 

 12.6 

 12.12 

 12.19 

 12.44 

 2.54 

 3.19 

 3.28 

 1.44 

 1.56 

 3.56 

 4.10 



5.14 

 5.36 



A.M. 

 P.M. 

 P.M. 



i 57 -0 

 Bell on. 



ii 50 -0 



iii 23 -5 

 "Water on floor of bell. 



iv 13 



v 11-0 

 Bell removed. 



vi 54 -0* 



°C. 

 15-4 



15-4 

 15-4 



15 '5 

 15 -4 



15 -9 



per cent. 

 54 



60 

 83 



94 

 94 



50 



* The value of this observation is doubtful ; it is marked with a x in fig. 7 and omitted 

 drawing the diagonal. 



