124 MASS. EXPERIMENT STATION BULLETIN 161. 



those from the hmed half, although thej^ did not show the tliickened, 

 dwarfed forms obtained in some of the water cultures. 



The results of this work point to an effect of the lime on the soil con- 

 stituents, by which the root environment is impro"\Td, rather than to an 

 effect within the plant bj^ the absorption of a larger amount of calcium 

 salts. 



