F. KiDD AND C. West 



11 



Table VIII. 



A. Experiments with Seeds as the Positive Electrode. 



Kiinl of seed used and its 

 coniljtion during experinient 



Dry seeds of Phltum pra- 

 teiise sown in germina- 

 tion dishes 



Distance of 



discharging 



electrode from 



the seeds 



5 oin. 



Lengtli of 

 si)ark 



■'$2 mm. 



Duration of 

 discharge 



1 mill. 



Swollen seeds of Phleum 

 pratensesovrn ingermina- 

 tion dishes 



5 cm. 



12 mm. 1 min. 



Effect of treatments upon 



germination and subsequent 



growth 



Has a favourable influence 

 upon germination and 

 also upon the subse- 

 quent growth 



Has an unfavourable in- 

 fluence upon th(^ later 

 growth 



The germination power is 

 greatly decreased prob- 

 ably because the seeds 

 were swollen for too long 

 a period and because the 

 discharge was too in- 

 tense 



Dry seed of Spring Rye 5 cm. 

 sown in germination 

 dishes 



12 mm. 



1 min. 



2 mins. 



10 



No effect 



These treatments have an 

 initial favourable action 

 upon germination and 

 produce a final small in- 

 crease in growth 



Causes injury and delay in 

 growth 



B. Experiments with Seeds as the Negative Electrode. 



Kind of seed used and its 

 condition during experiment 



Dry seeds of Spring Rye 40-50 cm. 

 sown in germination 

 dishes 



40 mm. 



1 ,. I germination and of ear- 

 1 J hours "j formation, but a decrease 



2 „ I in growth 



Swollen seeds of Barley; 

 these seeds had been pre- 

 viously soaked in water 

 for 6 hours at 30° C. and 

 were afterwards sown in 

 the open 



Swollen seeds of Spring 

 Wheat; these seeds had 

 been previously soaked 

 in water for 6 hours at 

 30° C. and were after- 

 wards sown in the open 



32 mm. 



!i cm. 



23 ram. 



2 mins. 



10 



30 



2 mins. 



10 



30 



/ The effect of these treat- 

 ments is at first to in- 

 crease growth consider- 

 ably, but the difference 

 disappears later 



The effect of these treat- 

 ments is to increase 

 growth; this increase in 

 growth is maintained. 

 Kar-formation was dou- 

 bled by the lO-minute 

 treatment 



