AND ITS RELATION TO ANIMAL LIFE 



39 



CHAPTER III 



VARIATION 



IN the Introduction I referred to the wide 

 variation in the chemical composition of 

 various vegetable products arising, as I con- 

 tend, from variation in soil and methods of 

 cultivation. Under the first head I append 

 the analysis of two soils from the same farm 

 in Canada, one virgin, the other cultivated. 



In the report of " Experimental Farms of 

 the Canadian Department of Agriculture for 

 1899 " are the analyses of two soils taken from 

 one farm, and considered representative soils 

 of the district 



