Report on the Field and Feeding Experiments at Wohurn. 
123 
CO 
<M 
id 
o-f-f 
1—1 
f— I 
i-H 
u 
t- 
IM 
O r-l 
l-H 
l-H 
£ o 
Pi 
5pa 
o 
-a 
=1 
o 
o 
