120 THE INTERNAL PARASITES OF 



original discovery of this worm in a Chinese variety of 

 hog was made by Dr. Natterer at Barra do Eio Negro, 

 Brazil, on the 24th of March, 1834. 



In the American States a very large proportion of the 

 hogs not only harbour this entozoon, but also the common 

 lung-strongle. I believe Dr. Fletcher brought the im- 

 portant subject of hog parasitism before the United 

 States National Swine Breeders' Association, which met 

 at Indianopolis last November (1872), and I can only 

 express regret that so little attention is paid to this and 

 other kindred subjects in England, where many wealthy 

 agricultural societies are known to be in existence. 



All enterprise and enthusiasm in the cause of parasitism 

 appears to be delegated to the proprietors of the public 

 press j and it must be allowed that, in the interests of 

 others rather than themselves, they have often com- 

 menced a useful work which, but for their initiative, would 

 never have been undertaken. 



Those who care to acquaint themselves with the facts 

 connected with the discovery of this remarkable worm 

 (Stejpkanurus dentatus) will find fuller references in my 

 review of Krabbe's recent memoir on the entozoa of 

 domesticated animals (Husdyrenes Indvoldsorme ; loc. 

 cit.) } given in the London Medical Record for April 2, 

 1873, and reprinted in the Veterinarian of the folio wiug 

 month. 



The spiral fleshworm is the little parasite which of all 

 other entozoa has acquired most notoriety. Whilst, 

 however, epidemics produced by the Trichina spiralis 

 are of frequent occurrence on the Continent, they have 

 been almost entirely unknown to the inhabitants of this 

 island. One such outbreak occurred in Cumberland in 

 the spring of 1871, the full particulars of which I have 



