- 199 



Nitrogen in grain 

 per cent. 



Sulphate of magnesia 1.33 



Dolomite (ground) 1.22 



Lime from dolomite 1.36 



Experiments on the inoculation of leguminous crops f" Nitro-bacterine"). 

 The crops tried were : 



1) Ordinary white clover. 



2) Mammoth white clover. 



3) Red clover. 



4) Lucerne. 



The seeds were sown on June i6th, 1908. There was not much 

 difference between the inoculated sets. The weighings of the first 

 cuttings yielded in green produce : 



Not inoculated Inoculated 

 grammes grammes 



Ordinary white clover. . 211.6 237.1 



Mammoth 204.3 227.1 



Red clover 211.- 215.6 



Lucerne 76.4 72.9 



A. D. HALL. Some Secondary actions of Manures upon the 

 Soil. Journal of the R. Agric. Soc. of England. Vol. 70, 1909, 

 PP- I2 '35- 



The Director of the Rothamsted Experimental Station (Lawes 

 Agricultural Trust) investigates the loss of carbonate of lime in 

 cultivated soils caused by the action of fertilizers. 



Samples of soils from the Rothamsted plots were taken from 

 one field in 1865, 1881, 1893 and 1894 and from other fields in 

 1867, 1868 and 1873 so tnat the effect of thirty years action of 

 the manures can be ascertained. 



The following table gives the amounts of carbonate of lime, cal- 

 culated as pounds per acre (kgr. i. 123 per hectare), in the surface 

 soil from certain of the plots in the Rothamsted fields at the dates 

 given, while the last column of the table gives the average annual 

 loss deduced from these figures. 



