THE ROTHAMSTED EXPERIMENTS 



351 



CO N ~ 

 C N 



I* 



^ a 



.2 l ^ 

 "S 



S.n 



tc 



"03 



.2 *> 

 1| 



o 

 w cT 







.y s . w 



* 



J'^ w 



'S "S 



3 S 



**** J 



"o K w 

 "aS & 



