STUDIES IN Tin: EFFECT OF UÖKTGEN RAYS, ETC. 



281 



(Note to Fig. 16 : Each Utile heap in this figure is the crop o£ one jilant.) 



A suininary of the results is sliown iu Table XIII. 



Table xm. 



The amount of crop decreased proportional to the doses given, and 

 apparently showed a negative stimulation of the rays. Here the ^-riter cau 



