136 



EXPERIMENT STATION. 



[Jan. 



resulted in stimulation of the seed. The germinator was then 

 placed in an autoclave and kept at a temperature of about 25° C. 

 The results of the experiments follow: — 



Table I. — Showing the Results of the Stimulating Effect of Positive and 

 Negative Electrical Charges on Radish Seeds and Seedlings {Rajphanus 

 sativus, L.). 



[Average of two experiments in each of which 60 seeds were used. Moist treated seed charged 

 with 10 small sparks from a Topler-Holtz machine. Measurements in millimeters, temperature 

 25° C] 



It is quite evident that the electrical treatment stimulated the 

 seed very materially^ as shown by the growth of the hypocotyls 

 and radicles given in this table. The average increased length 

 of the radicles and hypocotyls of the negatively charged seeds 

 over that of the normal was 23 per cent, for the hypocotyl and 

 15.88 per cent, for the radicle. The positively charged seeds 

 gave an average increase of 52.21 per cent, for the hy[3ocotyl 

 and 64.48 per cent, for the radicle over that of the normal ; show- 

 ing that the positive charges induced the greater growth, l^o 

 attention was given to accelerated germination in this experi- 

 ment. 



Table II. — Showing the Results of the Stimulating Effect of Positive and 

 Negative Electrical Charges on Lettuce Seeds and Seedlings {Lactuca 

 sativa, L.). 



(Average of two experiments in eacli of which 60 seeds were used. Moist treated seed charged 

 with 10 small sparks from a Topler-Holtz machine. Measurements in millimeters, temperature 

 25° C] 



