DISEASES OF THE RESPIRATORY ORGANS. 33 



no very satisfactory explanation of the fact. It appears 

 natural to refer the diseased condition of the lung substance 

 in the parasite cases to the accumulation of the mucus in the 

 smaller tubes producing collapse of the air-cells in certain 

 areas, which subsequently became inflamed — a sequence of 

 events sometimes observed in children. The appearance of 

 the lungs in several of the cases corresponds with this view ; 

 for the pneumonia was lobular, affecting small and isolated 

 portions of the lung tissue." 



Mr. James Moore, in his work on the homoeopathic treat- 

 ment of the dog, in his section on " Internal Parasites in the 

 Air-Passages" gives the following : 



" Fentastomum Tcenioides. — This worm occupies that part 

 of the respiratory tube which lies anterior to the larynx, and 

 specially inhabits the nasal sinuses, etc. Obstruction more or 

 less marked is the consequence of its presence in this regiori. 



" Chobart first discovered it in the frontal sinus of the 

 horse and the dog. He confounded it witii the taenia, and 

 christened it the tania lanceoU. 



" Blanchard examined many dogs without finding it, and 

 states that the helminth ological collection at the Jardin des 

 Plantes contains only two specimens. It has been found in 

 dogs in different parts of the Continent, and also in other 

 animals. Leuchart introduced the Pentastomum denticulatum 

 of the rabbit into the nostrils of a dog, where he afterwards 

 found the Pe}it. tenioides. He concludes that the former, 

 which lies encysted in the viscera of several species of ani- 

 mals, is the larval form of the latter. He states that mature 

 ripe eggs are thrown off from this parasite, and discharged 

 with the nasal mucus of its host in the act of sneezing. These 

 embryonic forms manage somehow or other to get introduced 

 into the bodies of other animals, where they become f-illy 

 developed. Fiirstenberg has found the immature or asexual 

 form in the mesenteric glands of the sheep, as developed from 

 the eggs of this parasite, which are swallowed by the sheep 

 with its food. When a dog or wolf eats the entrails and 



3. 



