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ROYAL SOCIETY OF CANADA 



greater part was from that source. When the second phase of the inves- 

 tigation is discussed it will be found that there is a remarkable agree- 

 ment between the increase of nitrogen in the soil through the decom- 

 position of the legume crop and the amounts of nitrogen given in this 

 table— and this, we think, may be taken as fairly good evidence that 

 these legumes have drawn upon the atmosphere for the greater part of 

 their nitrogen. 



These 'results are, of course, to be taken as indicative rather than 

 absolute ; they would vary somewhat according to the soil, the prevalence- 

 of the nitrogen-fixing bacteria, and the season. We shall not, therefore, 

 discuss them in detail, but certain features are so well marked 'that they 

 warrant consideration. 



Nitrogen in Various Legumes. 



