by chemical methods. 



105 



Table IV. Mangels. 

 University Farm. 



0) 



O 



eg 



d 



H 



d 



o 



C5 _ 



2 — ' d r£j 



'o o -c a 



c3 



o 



o 



3 

 0D 



^yielcl be j'* acfe 'aj fa 94 



c3 

 O 



[00/ 



acre- 



kg rcpf^j of Vor> j 



