94 



ical test, When a certain amount enters a certain part, the 

 germ, probably, germination is retarded, I offer this as a 

 suggestion only. Much more work should be done along this line. 



Effect of Ammonium Alum on Corn. 



A hard white variety of corn, bred at the Agricultural Ex- 

 periment Station for high and low protein and high and low oil 

 was used in this experiment. An equal number of grains of each 

 was placed in each of the following solutions of Ammonium Alum: 

 .1 X, .2 X, .3 X, A X, .5 X, .6 X, 7 and ,8 X. The corn was allow- 

 ed to soaK in these solutions twenty hours. The tables here giv- 

 en, represent the dry weight, weight after the soaKing, gain 

 and percent gain together with the average time of germination. 

 In these experiments every grain germinated. 



The percentage of gain is not different from that when the 

 corn is soaked for a like period in distilled water. The amount 

 absorbed varies with the different chemical compositions of the 

 same variety of corn but the strength of the solution has no 

 effect in this regard. Thus more absorption takes place in the 

 low protein than in the high and more in the high and low oil 

 than in the high and low protein. In general the more concen- 

 trated the solution, within the limits of my experiments, the 

 longer is the average time of germination: i.e. germination 

 is retarded. 



