172 

 y. hole force appears in a few days from the first a]v 

 pearance. 



Its commencement may be very frequently attri- 

 buted to seme accidental cause, as unusual exposure to 

 cold. Throwing into the water, or carelessly wash- 

 ing and not drying, are very common causes. Another 

 very general cause is contagion. It is catching in the 

 highest degree : u dog who has i.ot had it, teldom 

 escapes if lie is in company v^ilh one who has it. 

 When caught in this way, it is longer or shorter in 

 its approach according to the disposition and state of 

 the dog's health. 



Some breeds have it much Vvorsc than others; so 

 much so, that a whole litter of one bitch will die, 

 while aiiother cf the same bitch will have it very 

 mildly. Particular kinds of dogs have it also worse 

 than others : it is very fatal to pugs and greyhounds ; 

 terriers have it likewise badly, and it may be regarded 

 as a general rule, that the younger a dog has it, the 

 worse will the disease prove. Very young puppies 

 seldom live with it. 



As has been before sated, the immediate part of 

 the body that it fixes its particular attack upon is va- 

 rious according; to circumstances. It sometimes 

 seems to exist principally in the head, when it pro- 

 duces sneezing, watery eyes and nose, and every ap- 

 pearance of a violent cold taken. In some cases it 

 seems to affect the bowels only, and there is an ab- 

 sence of almost every other symptom but a violent 

 looseness. The chest, in other cases, appears more 

 affected than the head, and 1 here is then a short dis- 

 tressing cough appears before the running from the 



