350 ATONIC DISEASES. 



sized animal is 3 grs. twice a day in a pili, continued foi a month 

 at least. 



WORMS. 



Worms are a fertile source of disease in the dog, destroying 

 every year more puppies than does distemper itself ; and, in spite 

 of every precaution, attacking the kennelled hound or shooting dog, 

 as well as the pampered house pet and the half-starved cur. In old 

 and constantly used kennels, they are particularly rife, and I believe 

 that, in some way, their ova remain from year to year, attached 

 either to the walls or to the benches. All of the varieties met 

 with are propagated by ova, though some, as the Ascaris lumbri- 

 coides are also viviparous, so that the destruction of the worms 

 actually existing at the time the vermifuge is given does not neces- 

 sarily imply the after clearance of the animal. He may be infest- 

 ed with them as badly as before, from the hatching of the eggs 

 left behind. Besides the intestinal worms, there are also others 

 met with in the dog, including the large kidney worm, and the 

 hydatid, which is in all probability the cause of turnside. I shall, 

 therefore, first describe the appearance of each kind of worm ; 

 then the symptoms of worms in general; and, lastly, the best 

 means for their expulsion. 



The Maw-worm is much larger than its representative in the 

 human subject, which is a mere thread, and is hence called the 

 " thread-worm " In the dog it is about an inch in length, having 

 a milky white color. Maws-worms exist in great numbers in the 

 dog, chiefly occupying the large intestines. They do not injure 

 the health to any great degree, unless they exist in very large num- 

 bers. They are male and female, and are propagated by ova. 



The Round-worm is from four to seven inches long, round, 

 firm, and of a pale pink color. The two extremities are exactly 

 alike, and are slightly flattened in one direction at the point. See 

 engraving. Figure 47 shows a group of three round worms as 

 actually discharged from the intestine of a dog in which they 

 were thus knotted. I have often seen from six to a dozen round 



