ON BOTANICAL COMPOSITION OF HERBAGE 



51 



TABLE XXIII. BOTANICAL COMPOSITION, BY WEIGHT, OF THE HAY 

 AT TYSEA HILL FARM 



Soil: Boulder clay. Manures sown: December, 1915. 

 Samples taken: July 9th, 1919 



Composition of the grasses by weight 



W 



8 

 a> 



3 



70 



60 



50 

 40 

 30 

 20 

 10 



,H_ 



FIG. 7. Botanical composition of the Hay, by weight, at Martin's Hearne. 

 Season, 1919. Soil Boulder clay. 



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



3, Untreated. 4, Gafsa rock phosphate. 5, Egyptian rock phosphate. 



t'. Algerian rock phosphate. 



