CONTAGIOUS DISEASES OF DOMESTICATED ANIMALS. 



13 



•contagious pleuropneumonia. The autopsies revealed the existence of 

 a very similar condition in each of the animals. In most cases a whole 

 lung was hepatized and firmly attached to the diaphragm and ribs. In 

 •several of the animals both lungs were affected. The pleural cavity 

 ■contained large quantities of straw-colored effusion, and the connective 

 tissue of the lungs was excessively distended with exudation of a simi- 

 lar liquid. The inflammation was very plainly of a progressive char- 

 acter, and the marbling of the lung was as distinct as in any cases I have 

 •ever seen. 



The disease was introduced into this section by a car-load of 14 cows 

 brought by John Noble from Baltimore. Where these cows were or- 

 iginally infected is a contested point between the authorities of Penn- 

 sylvania and those of Maryland ; but there is no reason to doubt that 

 the outbreak near West Chester was caused by this lot of animals. 



These cows were sold as follows : July 19, to W. H. Shepherd, 1 ; July 

 26, to W. P. Thomas, 3 ; July 26, to H. Euches, 4 ; July 27, to J. H. 

 •Garret, 2 ; August 1, to J. Kelly, 2 ; not traced at time of report, 2. 



Mr. Shepherd's cow was found sick with symptoms of pleuro pneu- 

 monia September 8, and slaughtered by the State authorities. The 

 autopsy revealed the characteristic lesions of lung plague. September 

 13 a cow was found affected with the same disease and slaughtered on 

 Mr. Garret's farm. September 29 it was necessary to slaughter one of 

 Mr. Thomas' cows. October 1 it was found that two cows had alread^-^ 

 died on Mr. Euches' farm, and that six others were sick. 



According to information received from Dr. Bridge, October 23, 1884, 

 the number of cattle exposed and slaughtered on account of sickness 

 was as follows : 



Eight adjoining herds were infected by the above, as follows: 



Owner. 



Number 

 exposed. 



"W.n. Pratt 17 



M. S. Garrett 11 



K. J. Lewis ! 15 



C. Sniedle V 'J2 



Geo. P. lli'iglics ! 20 



W. F. Dutton I 16 



W. Evans t f) 



L.V.and W.E.Smedley 21 



Total 1 127 



Number 

 killed. 



