735 
human infantile digestive tract. As a consequence, greater energy 
is required for its digestion and assimilation, and it is of the highest 
importance that the infant metabolism be not further strained in this 
connection by the imposition upon it, in addition to this task, of the 
conversion of a milk whose digestibility is further impaired by fer- 
mentative changes due to its improper preparation and preservation 
as a food. 
^Adiile we can never hope to vie with natural nursing, an application 
of the principles briefly expounded in this paper will go far, I am 
convinced, toward eliminating the excessive complexity and uncer- 
tainty which have hitherto characterized the whole subject of infant 
feeding, and, in the main, be productive of better results than we can 
obtain by other methods. 
