Verminous Bronchitis and Pneumonia in Dogs. 391 



chia of wild hares and rabbits. Syntptoms : Hurried breathing, cough, frothy, 

 worm-bearing expectoration, dyspnoea, anaemia, emaciation. Treatment : 

 Mainly preventive ; raise young on artificial floors till weaned, then give 

 sound warren. 



This has been found in the wild rabbit and hare and has been 

 rarely seen in the warren rabbit raised for the market. Yet it 

 only lacks favorable conditions for the propagation and preserva- 

 tion of the worms, to develop a plague where the domesticated 

 rabbit is raised in crowded warrens with ground floors. The facts 

 that such warrens are usually on dry ground, or on artificial floors, 

 and that they are comparatively uncommon, may account for the 

 habitual exclusion of the offensive parasite. 



Strongylus Commutatus. A worm with rounded head and 

 circular mouth with three papillae. The male is ^4 to i inch and 

 Vae female about i inch long. The former has caudal bursa bilo- 

 bate, each lobe having 5 rays and two very long slender spicula. 

 The female has a pointed curved tail, and the vulva on a pre-anal 

 papilla. Oviparous and ovoviviparous. 



Habitat. Bronchia in wild rabbits and hares. 



The symptoms are hurried breathing, cough, frothy expectora- 

 tion containing worms, dyspncea, emaciation, anaemia. 



Treatment would be on the same lines as for other animals, but 

 should be especially preventive, including careful separation of 

 the sick and healthy or the destruction of the former and the rais- 

 ing of the latter on uncontaminated ground on sound food and 

 water. A valuable race may be preserved by keeping the young 

 on artificial floors till weaned and then placing them in a fresh 

 sound warren. 



VERMINOUS BRONCHITIS AND PNEUMONIA OF THE 



DOG. 



Strongylus Vasoram : >^ to % inch long, skin diaphanous, showing 

 spiral, reddish digestive canal ; head alated, no oral papillae ; male caudal 

 membrane bilobed, eight-ribbed ; female with curved, blunt tail, ova ellip- 

 tical. Habitat : Heart cavities, pulmonary vessels, embryos in bronchia. 

 Lesions : Semi-transparent, miliary nodule, of round cells with ovum or em- 

 bryo ; adjacent lung gray. Embryos taken in food and water develop in 

 digestive organs and veins, mature in heart, arteries, capillaries. Symp- 

 toms : Fits of dyspnoea coincident with embryonic development ; embryos 



