16 



N. H. AGR. EXPERIMENT STATION. 



[BuUetin 172 



O 







<! 



00 



&2 





s 



CO 







to 



<u 



o 





c3 





3 

 o3 



02 



08 



01 



o3 



a, 



s 



m 



a 

 o 



T3 



(U 

 02 

 02 



o3 





a 



3 



:S 



