16 



The Aflllns/i/im uj' tin Soil 



% Carbon dioxido 



00 



6 



o 



CM 



%OxvKPn 



<N o 



p 6 



IN 



(N 



o 

 6 



o 



O ft 



o ^ 



3: s 



.A VH 



• 3: 



nni||nu j.id s}jiid 'irjVJJiu sv ,'^ 



O O ID o 



(N '- 



HIImH ioiI l?l.l.>|.iln| JO SUOJIIII^ 



