GERMINATION OF SEED AS AFFECTED BY SULFURIC ACID TREATMENT 331 



tion of the check lots, or those germinated after being soaked in water 

 for 2 hours, is shown in comparison with the treated lots. The treated 

 lots include all acid treatments of 30 minutes or over, those treated 15 

 minutes not being included, since that time of treatment was considered 

 insufficient. The acceleration of germination is quite marked in each lot. 



C 



V 



FIG. 84. The solid line represents the germination of cotton seed treated with concen- 

 trated sulfuric acid for jo to 180 minutes; the broken line, the germination of the 

 untreated seed. ( Tables 18 and ip) 



TABLE 19. COTTON SEED 



Number of seeds germinated after 



