WATER CONTENT OF PLANT AND SOIL 



25 



in view. This was carried on with the plants in Compara- 

 tive Plot III. The following data were obtained from five 

 species of plants growing in six kinds of soil. 



Water Content of Healthy and Wilting Plants, amd Water in 

 Soil at the Time of Wilting. 



Helianthus annuus. 



Physical Condition at the Time of Wilting. ' 



Air temperature 90 " 



Relative humidity 44% 



Soil temperature 104 " 



Maximum light 35% 



Hordeum vulgare. 

 Physical Conditions at the Time of Wilting. 



Air temperature 100 * 



Relative humidity 47^ 



Soil temperature 106 ' 



Maximum light 35 ' 



