Diseases of the Respiratory Organs. 35 



destroying, over an important area, the ciliary action so 

 useful for this purpose. The same difference is met with 

 in human practice. Ordinary acute bronchitis in the adult 

 is not at all a dangerous affection, while in young children 

 it is the reverse ; and for the very reason that in them the 

 bronchial mucous membrane swells easily, and there is not 

 the same expulsive power to enable them to get rid of 

 the mucus which, in consequence, accumulates, andmaycause 

 collapse or inflammation of the lung tissue. In the ' lamb 

 disease ' death occurs from asphyxia, caused by the collec- 

 tion of mucus in the tubes. I have no records at hand ot 

 the state of the lung tissue in these cases, whether it is in 

 a condition of collapse or of inflammation ; probably the 

 latter, for I see the expression ' verminous pneumonia ' used 

 by some authors. 



" With reference to the pneumonic condition of the lungs 

 of the dogs in this epidemic, it will be remembered that in 

 three of thfe post-mortem examinations the inflammation of 

 the lungs was found without the occurrence of parasites in 

 the bronchial tubes ; the pneumonia being quite as exten- 

 sive as in the cases accompanied with strongyles. I must 

 confess that this circumstance has puzzled me not a little, and 

 I see 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 : — 



'^ Pentastomum. Tcenioides.— This worm occupies that 

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

 D— 2 



