202 PLANT PRODUCTS 



milk, milk can be converted into butter and cheese. The 

 production of cream or butter fits in well with the rearing 

 of calves, which constitutes an essential part of the milk- 

 production problem. It is distinctly advantageous that 

 the calf-producing districts should be well away from the 

 large towns, and that the milk-producing districts should 

 be within comparatively easy reach of the large towns. 

 The production of butter in itself is not a very economical 

 use to put milk to, but, taken in conjunction with calf 

 rearing, it is useful enough as a side issue. The production 

 of cheese stands on a higher plane as regards human food 

 production, since, for each pound of butter, at least three 

 pounds of cheese may be obtained, but if the milk is turned 

 into cheese, there will be less food available for rearing 

 calves. 



REFERENCES TO SECTION IV 



" Clotted Cream," Journ. Board of Agriculture, 1915-16, p. 105. 



Pegler, " The Goat as a Source of Milk," Journ. Board of Agriculture, 

 1915-16, p. 642. 



Mohan, " The Manufacture of Condensed Milk, Milk Powders, Casein, 

 etc.," Journ. Soc. Chem. Ind., 1915, p. 109. 



Aikman, " Milk, its Nature and Composition." (Black.) 



Richmond, " Dairy Chemistry." (Griffin.) 



Warington, " Chemistry of the Farm," p. 223. (Vinton.) 



Maidment, " The Home Dairy," p. 34. (Simpkin, Marshall.) 



Collins, " The Composition of Milk in the North of England," Journ. 

 Soc. Chem. Ind., 1904, p. 3. 



Collins, " The Natural Occurrence of Boric Acid in Milk," Univ. Dur. 

 Phil. Soc. 



Collins, " Investigations on Milk," Supplement Journ. Board of Agricul- 

 ture, Nov. 1911, p. 48. 



Leather, Analyst, 1914, p. 432. 



"Inquiry into the Methods of sampling Milk," Journ. Board of Agri- 

 culture, 1911-12, p. 30. 



Collins, "Difference in the Amount of Fat in Morning and Evening 

 Milk owing to Uneven Intervals of Milking," Proc. Univ. Dur. Phil. Soc., 

 Vol. IV. pt. i ; Journ. Board of Agriculture, 1911-12, p. 334. 



St. John, "The Milking Machine in India," Agric. Journ. Ind., 1917, 

 p. 291. 



Fleischmann, " The Book of the Dairy." (Blackie ) 



