Development and Maintenance. 13 



milk of the mother. Both need highly nutri- 

 tious food, and when this is denied, the owner 

 finds he is on the sure road towards spoiling 

 them. They always suffer acutely when good food 

 is afterwards given ; the change serves only to 

 engender serious, if not fatal, disease. Instances 

 will be found in the maladies black-leg or quarter- 

 evil, splenic apoplexy, blain, &c., of cattle and 

 sheep. 



In the horse we find, when put to work for 

 the first time, he is " unable to stand the corn " 

 the legs swell, coat stares, he performs his work 

 badly, and there are other indications of a dis- 

 ordered state within. 



Colic, or purpura hamorrhagica, speedily kills 

 him, or he is left to dole out a miserable exist- 

 ence with protracted suffering from chronic 

 disease of the lungs or liver, diabetes, canker, 

 laminitis (founder), constant attacks of lymphan- 

 gitis (weed), and farcy, terminating, after 

 effectually propagating the contagion, in glanders 

 and death. 



As life and development proceeds, food then 

 serves a different purpose. While it is expended 

 in supplying fresh elements to the blood, that 

 fluid has now to furnish elaborate materials to 

 replace the constituents of the body lost 

 during waste of muscle and other tissues, 

 which are rendered visible in the shape of 

 the products of respiration, perspiration, the 

 urine, and faeces. What formerly went to form 



