648 Inoculation of Leguminous Plants, [feb., 



poor soil, in good soil and in the open, was not apparent in the 

 sterilised soil. 



The results are given in the table below. The mean is taken 

 of the duplicate pots in each case. 



STERILISED SOIL. 





v> eigne 



w eignt 



Percentage of 



Crop. 



of grain 



of straw 



untreated 



in grams. 



in grams. 



Grain. 



Straw. 



I. — Peas : German preparation — 











Not treated 



16-03 



38'o 7 



100 



loo 



Treated 



1775 



39-67 



IIO 



104 



II. — Beans : German preparation — 











Not treated 



2 5 -6l | 



65-99 



100 



100 



Treated 



25*22 



62-72 



98 



95 



III. — Tares : German preparation — 











Not treated 



37-26 



44-52 



100 



100 



Treated 



32-53 



39-43 



87 



88 



Crop. 



Weight of 

 green crop, ! 

 grams. 



Percentage 

 of untreated. 



. IV. — Red Clover : German preparation (first 

 cutting) — 



Not treated 



Treated 



74-02 

 88-40 



100 

 119 



V. — Melilotus ; American preparation — 



Not treated 



Treated 



2550 

 25-29 



lOO 



99 



Wye. — Moore's culture : in pots of steamed sand the growth 



of the various leguminous plants, whether inoculated or un- 

 inoculated, was the same. 



II— Pot Cultures in Various Unsterilised Soils. 



Reports of experiments were received from seven centres. 



Two principal types of soil were selected for these experi- 

 ments : — (Jf) Soils from fertile fields or gardens ; (c) soils that 

 had either never been cultivated, or had not grown leguminous 

 crops for many years. In this series also a large number of 

 negative results are reported, and about an equal number of 

 positive results from the inoculation. The preparations used in 

 all but two cases were Moore's cultures. 



The following are the principal results : — 



Aberdeen. — Moore's cultures for Alsike, red clover, lucerne, 



