PARASITES OP ANIMALS. 325 



The broncJiial Strong ylus of Horses and Cattle. (^Strongylus 

 micrurus Melilis.) See page 240, Report for 1870. 



During the past year a serious outbreak of the disease 

 caused by this parasite occurred in Alleghany County, New 

 York, which caused the death of many calves and the serious 

 disease of all the cattle on the farm. Some of the worms 

 were sent to me for examination, by Thomas L. Harison, Esq., 

 secretary of the New York State Agricultural Society. They 

 proved to be identical with this species, long known and 

 dreaded by the farmers of Europe. Professor James Law, 

 who investigated this case, as well as two others of less im- 

 portance which occurred previously, has published a full and 

 interesting acount of them, in the Journal of the New York 

 State Agricultural Society, for July and August, 1871, from 

 which the following extracts have been made : 



" I have been able to find no proof of the existence of this 

 disease among our sheep, and the only evidence of its exis- 

 tence in calves is derived from the particulars of three out- 

 breaks in different parts of New York, and about which I was 

 consulted. 



The first of these took place in the autumn of 1869, among 

 the calves of Mr. Wood, Woodville, N. Y., and though one 

 or two had already died, the malady was easily controlled by 

 putting in practice the measures advised in this paper. 



Tlie second outbreak, which was only reported to me re- 

 cently, occurred on the farm of Mr. Sutton, Ovid, Seneca 

 county, N. Y. In this case four yearlings, fed during the 

 previous autumn on a sloping dry orchard, and watered from 

 a stream in a ravine close by, were attacked in March, 1870, 

 while confined to the yards and fed on clover hay, with water 

 from the stream. Two died in from six to ten days after the 

 seizure, a third remained in low condition and perished in 

 July, and the fourth recovered. On this same farm the chick- 

 ens and turkeys perished last summer in great numbers from 

 the gapes, and squirrels have furnished specimens of bronchial 



