MORBID ANATOMY 



231 



for the experimental form. In the produced lesions, fruit forma- 

 tion is exceptional ; but it has been observed by Renon to take 

 place only where there is full communication with the air. It 

 has been observed only in the lung. It is extremely rare for 

 aspergillosis to pass from one animal to another. The infec- 

 tion can only take place with the spores. 



Recently Pearson and Ravenel have described a very inter- 

 esting case of pneumomycosis in a cow due to A. fiunigaius. 

 As this seems to be the only carefully described case in this 

 species of animals listed in this country their description of the 

 symptoms and lesions is very largely incorporated here. The 

 case was in a Jersey cow six years old. She had been in bad 

 condition for six months prior to bringing her to the Veteri- 

 nary Hospital where she was tested with tubercuHn with 

 no reaction. At this time she did not eat, was weak and 

 depressed, respiration labored and from 40 to 60 per minute. 

 Pulse rapid. Percussion of the chest walls gave a sound that 

 if anything was clearer and louder than the normal percus- 

 sion sound. Upon auscultation it was found that the vesicular 

 and bronchial murmurs were considerably increased in inten- 

 sity and accompanied here and there by sibilant rales. She 

 coughed violentlj^ at times. Six days after she came to the 

 hospital the breathing became more rapid and difficult and the 

 pulse very much accelerated. The animal did not eat, grew 

 weak rapidly and died four days later, or ten days after admis- 

 sion to the hospital. 



S 178. Morbid anatomy. The anatomical changes 

 given here are restricted to the case of Pearson and Ravenel. 

 The animal was much emaciated. The mucous membrane of 

 the small intestine was catarrhal and showed a small amount 

 of erosion. All the organs were normal except the lungs. 

 The most striking features on external examination was the 

 extreme amount of emphysema. The lobules were separated 

 from each other bj' 3 to 5 mm. and even at some distance from 

 the borders one could see through these crevices by transmitted 

 light. On the surface, the sub-pleural connective tissue was 

 distended by large blebs. Upon palpation the lung crackled 

 and numerous hard nodules could be felt. On section numer- 



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