bTl'DlE.S IN THE El FECT OF EONTGEX EAYS, ETC. 



279 



tablk xn. 



On April 2, the gro-«th of 69 Il-plants was somewliat iufwior to tliat of 

 coDtiX)ls, but in tliat of 50 H and down thcrc was no dillcrenco in outTwaixl 

 apixjarance. TIio growth of 80 H-plante was exti-aordinarily inferior. As afore- 

 said, 150H-seeds genninated and developed to seedHngs, whose radicle reached 

 2-3 cm. 



In order to show the state of growth, the average of the number of 

 nodes and nodes having buds is shown IxjIow : — 



(^Examined on April 6) 



The inferior appeai'ance of 60H-pilants on April 2, as aforesaid, is due to 

 tHs decrease in the number of nodes. In the 80 H, the development was so 

 bad that the average-nimiber of nodes not only decreased, but only one of 

 them had buds on April 6. 



These plants were parasited by Bacillus Fahae but thei-e was no damage 

 by P. ahramus. Therefore their gixjwth was very good and their fruit was 

 cropped' on Jimo 22, '18. 



1. On account of illness of the writer, his friend llr. Y. Imai gathered the crop and classi- 

 fied the fruits with Mr. K. Kimuka ; he asked Mr. S. Xag^vi to photograph them as shown in 

 Figs. 9-14. Without this assistance, the results of experiments V-VII would have had to be 

 abandoned. The writer expresses his hearty thanks to these gentlemen for their kindly help. 



