238 CHEMICAL FERTILIZERS 



100 acres of medium quality grass set aside for grazing 

 cattle would amount to ^400 per annum, but the same land, 

 if put on to a four-course rotation, would produce ^800 

 worth of food. If Great Britain can produce another 400 

 worth of food without causing other industries to suffer, the 

 nation will have that amount more with which to pay its 

 foreign debts. During the war there has been a great 

 accession to the ranks of the workers of Britain, chiefly 

 through the influx of women, many of whom will probably 

 not leave. This increased supply of labour may mitigate 

 some of the difficulties of the future. It is by the utilization 

 of modern appliances, chemical fertilizers and machinery, 

 that Great Britain must look in the future to enable the 

 country to make full utilization of the land. 



REFERENCES TO SECTION III. 



Smetham, " Some Effects of War Conditions on Agriculture," Journ. 

 Roy. Lane. Agric. Soc., 1915. 



Russell, " Manuring for Higher Crop Production" (Cambridge University 

 Press). 



"Artificial Nitrogenous Fertilizers," Journ. Soc. Chem. Ind., 1920, p. 5. 



Middleton, " Food Production in War and Peace," Journ. Bd. Agric., 

 February, 1919, p. 1264. 



Hall, " Agriculture after the War," p. 31 (Murray). 



Wood, " The National Food Supply in Peace and War " (Cambridge 

 University Press). 



Turner, " The Land and the Empire " (Murray). 



