METABOLISM AND FOOD 103 



may also be slightly warmed — a temperature of 

 10-15 C. (50-60 F.) is about right. Cold water 

 and food not only lower the production, but can 

 also cause disturbance of health. 



There ought to be little need to mention here 

 that the drinking-water for animals should be 

 almost as carefully chosen as for human beings. 



