CLIMATE AND PLANT GROWTH. 



23 



6000 



5000 



4-OOO 



3000 



2OOO 



/OOO 



<3 



I 



39S6.3 



X X 





\ 



\ 





2.490.3 



Oak-brush 



Aspen 



'fc sphere 

 cA- sphere 



'S30.Z. 



37//. 7 



270.9 



Difference. beTfve.e.n white, and 

 black 



FIG. 8. Summation of evaporation from white cylinder, white sphere, and black sphere 

 and of differences between white and black spheres.- 



