388 Veterinary Medicine. 



They are much less common than lung worms of calves and 

 lambs, which has been explained by the low vitality of the em- 

 bryos. Railliet found that these died in seven days in pure water. 

 An almost constant internal existence appears to be needful to 

 their preservation. Yet they attain a considerable prevalence in 

 favorable localities. Morier found them in Switzerland in horses 

 of all ages, Eichler and Guelt in Berlin and Arnfield in London. 

 The author found them to be exceedingly common in donkeys, 

 old and young, brought from the low damp lands at Hammer- 

 smith, I,ondon, for dissection. In none of these cases, however, 

 did they attain to the ruinous extension which belongs to the lung 

 worms of sheep and cattle. 



A hard or mucous paroxysmal cough, with short and wheezing 

 breathing, developed by exercise, and the expectoration of the 

 worms and their embyros, have characterized the disease. The 

 lesions are of the same nature with those caused by lung worms in 

 sheep, and with a dense aggregation of equine hosts, under circum- 

 stances peculiarly favorable to the preservation of the embryos 

 and their ingestion in water or otherwise, the worm could well 

 start a local epizootic. 



The general measures oi prevention and treatment are the same 

 as for lambs and calves, account being taken of the fact that this 

 parasite cannot be conveyed to these animals, nor the lung worms 

 of the ruminants to solipeds. Horses can safely graze on pas- 

 tures infested with the lung worms of sheep and cattle, and ru- 

 minants may be turned out on those that are infested with 

 strongylus Arnfieldi. 



SCLEROSTOMA EQUINA IN HORSE'S LUNG. 



This parasite which, in its sexually immature condition, in- 

 vades the blood vessels, has been found on two different occasions 

 in the horse's lung by Lammers and Michalik respectively. In 

 the case recorded by the latter there was resultant pulmonary 

 haemorrhage. 



PNEUMO-MYCOSIS IN SOLIPEDS. 



See Aspergillus in Birds. 



