462 



EVENING DISCOURSES 



I use the protein value of the food rather than the starch equivalent 

 because it is in regard to the protein value that there is the greatest danger 

 of the animal receiving insufficient. 



Recent investigations of Dr. M'Gonigle and others have shown that the 

 poorer population of this country, though they receive sufficient starch 

 equivalent, are definitely suffering from partial protein starvation. This 



Yield of Crude Protein in Gross from 

 cutting during the summer months . 



1934- 



Fertilised 

 (2<i ct^t. AmSQ^per acre J 



Unfertilised 



o 



C 



U J Q) 



"1 < U^ 



5: 



C 



X 



< \n 



Fig. 3. 



is especially deleterious for growing children and for expectant and nursing 

 mothers. 



As an example of the way in which the growth of grass varies at different 

 times of the year, I can show you the results of an experiment at Reaseheath 

 in Cheshire in 1934, when the grass was cut whenever it was 4 to 5 inches 

 long. 



The limitation of productivity was chiefly water supply as it was a year 

 of drought. 



During 1935 there was more rain and the increase of yield due to fertilising 

 was greater. 



These two tables indicate the different growth in two succeeding years, 

 and the difference of the distribution of that growth over the season. 



