1058- 



THE DOG. 



cause in their passage into the intestinal canal, says he has seen as 

 many as 300,000 of these spiral worms in half an ounce of the: flesh 

 of a corpse. ' 



Fig. 1410. — Male Giant Strangle in the Dog. 



■!■/. 



The internal parasites of the dog are of two kinds, Round- 

 worms and Tape-worms. Some authorities have mentioned an- 

 other species, Mawworms ; but these -are only the semi-independ- 

 ent segments of two species of the tape-worm. 



The Bordered Round-Worm. — The most prominent round- 

 worm infesting the dpg is what we shall call the Bordered worm, 



Fig. 1411.— Female Giant Strangle in the Dog. 



which is the ascaris marginata of Rudolphi, the ascaride bordiot the 

 French. (Fig. 14080 



In the autopsical examination of 500 dogs, Dr. Krabbe, of Co- 

 penhagen, found round-worms in 122, while out of 144, dissected at 



