530 BOYNTON. 



3. The virus having invaded the tissue gives rise to a sero- 

 fibrinous exudate, intermingled with groups of leucocytes, leading 

 to thrombosis of both lymph and blood vessels. 



4. The muscle lesions correspond with the lung lesions of 

 contagious pleuropneumonia in the following respect: 



(a) Thrombus formation occurs in the veins in both tissues. 



(b) The inflammatory areas around the blood vessels are 

 similar. 



(c) The connective tissue is chiefly affected in both tissues. 



(d) The abundant serofibrinous exudate is present in both. 



(e) The deep-staining line of leucocytes along the edge of the 

 connective tissue is characteristic in both tissues. 



(/) The tendency toward a chronic productive infiammation 

 is present in both. 



5. Thus in summing up all the lesions, the lung and muscle 

 lesions are found to correspond in practically every respect. 



REFERENCES. 



(1) Meyer, K. F. Notes on the pathological anatomy of pleuro-pneumonia, 



contagiosa bovum. The Veterinary Bacteriological Laboratories of 

 the Transvaal, issued in commemoration of the Opening of the new 

 Laboratories at Onderstepoort, Pretoria, October, 1908. Pretoria 

 (1909), 135. 



(2) ZiEGLER, Ernst. General Pathology. Eleventh Edition. Wm. Wood 



& Co., New York (1908), 321. 



(3) Smith, Theobald. Annual Rep. Bur. Animal Ind., U. S. Dept. Agr., 



(1895-96), 143. 



