Dec. 37, 191S 



Diuresis and Milk Flow 



565 



possible that the previous severe regime of sodium acetate and purin 

 feeding may have injured the kidneys sufficiently to account for the 

 results obtained. 



In other trials it was repeatedly demonstrated that the administration 

 of urea upon consecutive days would not continue to influence milk secre- 

 tion even though diuresis obtained. This is brought out in Table IV. 



Table IV. — Effect of repeated urea administration on the milk flow of goat I 



It is significant that the consumption of water upon repeated admin- 

 istrations of urea increases with the diuresis. Whatever factors may be 

 responsible for the symptoms of increased thirst when urea is given, 

 they do not become operative until the water supply of the body is drawn 

 upon so heavily that milk secretion is reduced. The stimulation of the 

 mechanism for maintaining the concentration of the body fluids normal is 

 then sufficient to cause the animal to imbibe enough water for all its 

 excretory and secretory processes. 



In this connection it was of great interest to determine the effect of the 

 administration of sodium chlorid upon milk secretion. Table V gives 

 the data obtained with goat 2. 



Table V. — Effect of sodium chlorid on the milk flow of goat 2 



