WATER CONTENT OF PLANT AND SOIL 



37 



slightly above normal at the time of dying increase consid- 

 erably the amount of non-available water. 



Obervations and determinations of water content were 

 conducted with plants of Syntherisma sanguinale in the plant 

 house during a period lasting from March 25 to May 3. 

 The results of these observations are separated into two 

 groups, 19 were made before April 5, and 19 afterward. 

 The results will now be compared. 



Physical factors, March 26 to April 15. 



Average air temperature 71o 



Average relative humidity 07% 



Average soil temperature 730 



Average maximum light 12.01% 



Physical factors, April 15 to May S. 



Average air temperature 76 « 



Average relaiive humidity 66% 



Average soil temperature 80 " 



Average maximum light 24.8% 



Syntherisma sanguinale. 



In the same way the observations on Chaetochloa viridis 

 are separated into two groups, eight taken before April 

 14, and eight after April 14, the physical factors being quite 

 the same as before. 



Ghaetochloa viridis. 



