INTRODUCTION. 



TT has always been the investigations of science that 

 * have graded the path on which practice has fol- 

 lowed, but too often sluggishly after a longer of 

 shorter time ; it has been the same in regard to the 

 production of a rational nourishment for infants. 

 Here science has recorded singular successes on the 

 different fields that must contribute to the attainment 

 of a desirable product, but practical execution has 

 been slow to follow the lead. 



Statistics have forced upon us the conviction that 

 the mortality of infants artificially nourished is so 

 much greater than that of those nourished in the 

 natural way on the breast, and that whatever dif- 

 ference there may exist in the causes of deterioration 

 in the various levels of human society \vomeii live in 

 amongst civilized nations, the fact is uniformly estab- 

 lished that the development of the milk glands in 

 the female breast is steadily decreasing/ 



Cow's milk will, for general purposes, ever be re- 

 garded as the best substitute for mother's milk. Natu- 

 ral science has clone much to impart the knowledge 

 of the influence of feed on the production of milk, 

 and engineering has, by the invention of improved 

 machinery, perfectly revolutionized dairy technics, 

 while the production of a healthy infants' milk has 



