JOURNAL OF AGRICULTURAL SCIENCE. Vol. III. No. 2. 



PLATE IX 



8 o F c 



u 



O o -= -:i 



S ^ 



— (L) '1^ Q^ ^ 



D I H H 



— c^ m T 



r-to 



to 

 lo 



H 



-T3 



E 1 



-^ 2 c 



O 



E r= Q-- 



U 



D I H H 



— CN t~0 '^ 



