CLIMATE AND PLANT GROWTH. 



23 



6000 



<4-000 



3000 



/OOO 



<0 «j 



I s « 



* > 



} 



SS3 0.Z. 







/ / 



4-ZS/.3 



39S6.3 



s 



s 



/ 

 / 



/ / 



y 



/ s 



■37//. 7 





\ N 



Z780.y 



/' 



'2.490.3 





/S/3.7 



^^^ 





/ 27 3.9 





/Z4S./ 











Oak-brush 



Aspen 



S p ruce.fi r- 



Fig. 



White sphere 



B/ack sphere 

 _._/^/7//£ cylinder 



Difference between white and 



black spheres 



-Summation of evaporation from white cylinder, white sphere, and black sphere 

 and of differences between white and black spheres. 



