240 THE DOG IN DISEASE. 



The miiriated tincture, reduced iron, the saccharated 

 carbonate, j^hosphates containing iron, as well as cod-liver 

 oil, and, if the appetite is poor, the citrate of iron and 

 quinine — all may serve a good purpose. 



In some cases minute doses of arsenic or corrosive sub- 

 limate will help the action of iron or do what this drug 

 alone can not. However, the importance of gentle exer- 

 else, of sunlight, and of grooming and massage, is very 

 great. Parasites, if present, must of course be expelled. 



Plethora is the opposite condition to that just described, 

 and is most likely to occur in vigorous young dogs that 

 are insufficiently exercised and overfed. 



The remedies are plain : low diet for a time, given but 

 once a day, plenty of exercise gradually increased, an oc- 

 casional laxative, etc. 



HEART-DISEASE. 



Until the physical examination of dogs is practiced 

 more systematically, and post-mortem examinations much 

 more frequently made, we shall continue to be a good deal 

 in the dark on this subject. 



All violent exercise, if long continued, tends, both in 

 man and the lower animals, to induce disease of the heart 

 and blood-vessels. 



The dog has a large and powerful heart, and the elas- 

 ticity of the arteries of the dog and other of the domestic 

 animals is not so often impaired by disease as in the case 

 of man ; nevertheless, dogs violently exercised — such as 

 coursing greyhounds and iield-dogs that engage in frequent 

 competitions — do occasionally die Fiiddenly from heart- 

 disease ; and dogs, probably of tener than we are aware, 



