Internal Parasites. 22 1 



Vienna in 104 out of 144 dogs dissected for that purpose; 

 and Dr. Krabbe obtained it at Copenhagen in 122 instances 

 from \he post-mortem examinations of 500 dogs. 



According to my own experiences, it occurs in English 

 dogs at the rate of about seventy per cent. Occupying 

 principally the small intestines, but often wandering into 

 the stomach, and occasionally also making its way into the 

 throat and nostril, this parasite is a frequent source of severe 

 intestinal disturbance, sometimes producing even death 

 itself. , Cats and dogs alike are constantly throwing them 

 up, and it is a great relief to the host when they are thus 

 dislodged. Their occasional passage by the ordinary 

 outlet is also a matter of common observation ; but it is 

 not so very generally understood that these modes of 

 egress are often the result of a voluntary wandering on the 

 part of the guest. This is practically of some moment, 

 because it accounts for the circumstance of their being 

 sometimes found in the nasal passages, and in other unusual 

 situations. 



The formidable nature of the symptoms which may thus 

 be superinduced have been fully indicated in a letter of 

 mine which appeared in the Field for December 21, 1872. 

 Under ordinary circumstances, the symptoms in the dog 

 are those of irregular intestinal action, accompanied with 

 nausea and spasmodic colic, irritation, a voracious appetite, 

 and more or less loss of flesh. In addition, there may be 

 foetor of the breath, accompanied by a short husky cough, 

 and an impoverished state of the coat ; and, either with or 

 without any of these symptoms, there may be more or less 

 paralysis. I may here make mention of an interesting 

 case of paralysis in puppies brought under my notice by 

 Mr. Lewis {Field, December 7, 1872), in which it was 

 instructive to notice how complete a cure followed the 

 administration of a simple aperient, drug. Quite recently 

 also a correspondent, writing from Ceylon under the 

 signature of "Veddah," gave a suggestive instance where 



