154 Modern Breaking 



diet, muscular efforts will, if severe, produce 

 on!}' the minimum amount of heat and effete 

 matter. If the animal is in poor condition, 

 the muscles soft and flabby, and surrounded by 

 fat, slight exercise will consume a large amount 

 of heat and waste products. It is these poison- 

 ous waste products that the athlete, horse and 

 dog have to contend with, and, no matter how 

 carefully trained, it is these waste products 

 that eventually limit their performance. 



A dog's wind may be all right, and he may 

 be ready to go and want to go, but if the pro- 

 duction of these waste products is too rapid for 

 their removal by the kidneys and other organs, 

 they remain in the system and partially paralyze 

 the nerves controlling the muscles and they 

 refuse to act. 



The fat or muscle making possibilities of 

 various foods and the animal's actual condition 

 can be studied very intelligently by the use, 

 after exercise or work, of a small clinical ther- 

 mometer. When the maximum amount of work 

 short of actual exhaustion produces the mini- 

 mum degree of heat as registered by the ther- 

 mometer, the animal is. in the best condition 

 and the foods that will produce these results 

 are the foods to be adopted, and those that 

 create the greatest heat for a given amount of 

 work are to be avoided. 



As a general working system it can be laid 



