22 



TRANSPIRATION IN A DESERT PERENNIAL. 



-Transpiration of a branch in leaf (e) of an adult tree. 

 ' Date, March 29, 1911. 



Experiment V. 



Time. 



r. 



7''03"'a.m \ 



8 04 a.m j 



8 08 a.m 



9 14 a.m 



9 19 am \ 



10 19 a.m j 



10 24 a.m \ 



11 22 a.m / 



11 36 a.m 



12 24 p.m 



12 39 p.m 1 



1 53 p.m / 



2 11 p.m 1 



3 20 p.m / 



3 24 p.m \ 



4 28 p.m J 



0.00382 

 .00618 

 .00835 

 .00398 

 .00636 

 .00545 

 .00480 

 .00193 



Time. 



E. 



K 



j 7''05'na.m. 

 I 7 58 a.m. 



8 

 9 



9 

 10 



10 

 11 



11 

 12 



('? 



11 

 10 



21 

 10 



26 

 15 



38 

 15 



42 

 45 



a.m. 

 a.m. 



a.m. 

 a.m. 



a.m. 

 a.m. 



a.m. 

 p.m. 



p.m. 

 p.m. 



030 

 .037 

 .046 

 .050 



.or.i 



.052 



0.12fi 

 .166 

 .181 

 .079 

 .124 

 .105 



Time. 



7h 



(1? 



fll 



112 

 fl2 



I 2 

 13 



3 

 4 



03" a.m 



04 a.m 



08 a.m 



14 a.m 



19 a.m 



19 a.m 



24 a.m 



22 a.m 



36 a.m 



24 p.m 



39 p.m 



53 p.m 



11 p.m 



20 p.m 



24 p.m 



28 p.m 



Dew-point. 



Plant. 



C. 

 -3.0 

 -9.0 



-7.0 

 0.5 



-2.0 

 0.0 



-2.0 

 0.0 



-4.5 

 -2.0 



-4.5 

 -0.5 



-5.0 

 -5.5 



-4.5 

 -5.0 



Atmom- 

 eter. 



C. 



-3.0 



-8.5 



-7.0 

 0.2 



-2.0 

 0.5 



-2.0 

 0.3 



-4.5 

 -1.6 



-4. 

 -1. 



Air. 



' C. 

 -3.0 

 -7.0 



-7.0 

 -2.0 



-2.0 

 -2.0 



-2.0 

 -4.0 



-4.5 

 -4.5 



-4.5 

 -4.5 



-5.0 

 -4.5 



-4.5 

 -4.0 



Temperature. 



Plant. 



o p 



66' 

 71 



72 



82 



83 

 88 



88 

 90 



89 

 91 



90 

 91 



89 

 89 



88 

 89 



Atmom- 

 eter. 



' F. 

 66 

 72 



72 



82 



83 

 89 



88 

 90 



89 

 91 



90 

 91 



Relative humidity. 



Air. 



o p_ 



66" 

 71 



72 

 83 



83 



89 



89 

 90 



90 

 90 



89 



88 



88 

 84 



Plant. 



p. ct. 

 22 

 12 



14 

 19 



14 

 14 



11 



13 



9 

 11 



9 

 12 



9 

 9 



10 

 9 



Atmom- 

 eter. 



p. ct, 

 22 

 12 



13 



18 



14 

 14 



11 

 14 



9 

 11 



9 

 12 



Air. 



p. ct. 

 22 

 14 



14 

 14 



14 

 14 



11 

 9 



9 

 9 



9 

 9 



9 

 10 



10 

 11 



