WHY cow's MILK? 



49 



or less important differences. In a general way, 

 however, the figures given are satisfactory and will 

 serve our purpose admirably if we only bear in mind 

 that the milk of individual animals differs at various 

 stages of the lacteal period: that there is consider- 

 able variation in the character of the milk produced 

 by individual animals of the same species, and even 

 of the same parentage; that among the domestic 

 animals there are marked differences in the quantity 

 and quality of the milk produced ; that many factors 

 besides those named, such as age, health, food, 

 and probably climate, influence the quality of the 

 milk. It is therefore a somewhat "rough and ready" 

 measure with which we have to deal. 



