A-i. Rpt. Off'ce of Experiment Stations, 1909, 



Plate VII. 



FiQ. 1.— Peas in Outer Pots; Oats in Inner Pots. Porous Inner Pot on 

 Left Glazed Inner Pot on Right. 



Fig. 2.— Vetch in Outer Pots; Rye in Inner Pots. Porous Inner Pot on 

 Left; Glazed Inner Pot on Right. 



Method devi.sed at New .Iitscv .'station fi>r .xtiKiyiii),' iii>|ini|>ri)i(i(>n of nitrogen by cereals 



Kriiuti in conjunctioii with legumes. 



