J. A. VOELCKER. Soils rendered unfertile by excess of Mag- 

 nesia. Journ. R. Agric. Soc. of England ', 1909, pp. 339352. 



At the Woburn Experim. Station the Author has frequently if 

 not universally found that crops will not thrive uniformly well on 

 soils containing magnesia in excess of lime. 



The following are four analyses of unfertile soils which illus- 

 trate this cause of unproductivenes : 



A and B were soils from Staffordshire, and though basic slag 

 had been applied and also farmyard manure the grass would hardly 

 keep any stock on it. 



C was from Worcestershire. Oats would not grow properly on it. 

 This had been the general experience on this field with corn crops 

 during recent years. 



D was from Gloucestershire. Here grass would not grow {pro- 

 perly. The herbage was poor and wiry, containing little or no 

 clover. 





