28 



THE ESSEX EXPERIMENTS 



TABLE XII. WEIGHT OF HAY AT FARNHAM HALL 

 Manures sown: February 22nd, 1917 



TABLE XIII. PERCENTAGE OF GROUND SPACE OCCUPIED BY THE 

 VEGETATION ON THE PLOTS AT FARNHAM HALL: August, 1919 



FARNHAM (BOULDER CLAY SOIL) 



1 



1 



bo 



Pia. 3. Percentage of Ground Space occupied by the Vegetation at Farnham, 



August, 1919. Soil Boulder clay. 

 1, Open hearth (fluorspar) basic slag. 2, Open hearth high soluble basic slag. 



3, Untreated. 4, Gafsa rock phosphate. 



