64 



THE ROTHAMSTED EXPERIMENTS. 



0.2 



a 

 p 



►-! 



K 



o 

 K 



< 



X 



a 



p 



H 



ft 



i— i 



F 

 O 



a 



CO 



pq 



B C8 



«0-p 



C3 O o »0 



u CT. uO O 



ftooo 



a ■*«« 



° r- O O 



g o oo 



•a Ag 



co m S 



s .s s 



Id P'U 



_ AM 

 •5. 3 S 



