66 BUTTER, SUGAR, STARCH, fee. 



tions are more frequent ; and, for equal bulks, the con- 

 sumption of oxygen must be greater rather than smaller 

 in the young than in the adult animal. But, since the 

 metamorphosis of organized parts goes on more slowly, 

 there would ensue a deficiency of those substances, the 

 carbon and hydrogen of which are adapted for combina- 

 tion with oxygen ; because, in the carnivora, it is the 

 new compounds, produced by the metamorphosis of 

 organized parts, which nature has destined to furnish 

 the necessary resistance to the action of the oxygen, 

 and to produce animal heat. What is wanting for these 

 purposes, an infinite wisdom has supplied to the young 

 animal in its natural food. 



The carbon and hydrogen of butter, and the carbon 

 of the sugar of milk, no part of either of which can 

 yield blood, fibrine, or albumen, are destined for the 

 support of the respiratory process, at an age when a 

 greater resistance is opposed to the metamorphosis of 

 existing organisms ; or, in other words, to the produc- 

 tion of compounds, which in the adult state are produced 

 in quantity amply sufficient for the purpose of respira- 

 tion. 



The young animal receives the constituents of its 

 blood in the caseine of the milk. A metamorphosis of 

 existing organs goes on, for bile and urine are secreted ; 

 the matter of the metamorphosed parts is given off in 

 the form of urine, of carbonic acid, and of water ; but 

 the butter and sugar of milk also disappear ; they can- 

 not be detected in the faeces. 



The butter and sugar of milk are given out in the 



