PARASITES INFECTIiXG THE DOG. 549 



TERES. 



Another worm, the teres, occasionally infects dogs. It resem- 

 bles the earth worm. Occasionally they crawl into the stomach 

 and produce a great deal of inflammation. 



TAPEWORM— TAENIA ECHINOCOCCUS. 



This worm consists of a head and three segments. It is one- 

 third of an inch in length. The last segment is the longest part 

 of the body. 



TAENIA COENURES. 



This worm is from twelve to eighteen inches long. 



TAENIA MARYMALO. 



This is the large tapewonn of the dog. It measures from three 

 to eight feet long, and consists of a head and four suckers. AVe 

 find them all in the small intestines. The mugmato is found 

 about the middle of the intestine. In regard to numbers, the 

 first parasite is not common. You may find a thousand or per- 

 haps only forty. In the second and third varieties yon will find 

 from one to twelve. All of them are found holding on to some 

 part of the mucous memi)rane of the small intestines. They 

 impregnate in the dog. 



Symptojis. — A wasting away of the animals, voracious appe- 

 tite. 



Treatment. — First give the animal a purgative, and on the 

 following mornino' oive the worm medicine. ^lale shield fern 

 or Felix mass and powdered areca nut should be given — pow- 

 dered areca nut, two grains for each pound of the animal's 

 weight; male shield fern, ten to twenty drops. Two hours after- 

 ward a tablespoonful of castor oil should be given. In twelve 

 hours the worms will be passed. The fceces should be burnt. 

 This treatment should be repeated every two weeks, and then 

 every eight weeks, until a cure is effected. 



