I5O SOILS 



said to the contrary. While it is true that many tests 

 were made in actual field operation, only 40 per cent, were 

 in any degree successful. It is not known just what per 

 cent, of these trials would have shown like results, even 

 though no inoculation had been made. Certainly, the 

 results have been most disappointing, and a most interest- 

 ing theory has come to naught. 



It is to be hoped the new plan of liquid pure-cultures 

 will be tried and proved before given over to spectacular 

 advertisement, as was done with its parent predecessor. 



Inoculation secures nitrogen only. Let this be clearly 

 understood, also : no sort of inoculation inoculation soil 



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or pure culture is able to provide other elements than 

 nitrogen. Nor can nitrogen be got save through the use 

 of a legume crop. This idea is repeated here, that it 

 may be understood clearly that inoculation has to do only 

 with nitrogen, the legumes and the bacteria associated 

 with the two. In this way, only, can you secure any re- 

 ward for time, labor and money expended in the pursuit 

 of nitrogen. 



The legume to select. In selecting a legume that shall 

 serve in the capacity of a nitrogen gatherer for other 

 crops, you will be governed, naturally, by circumstances. 



