Actiuoniycosis of Cattle. 



659 



may appear in a number of places and discharge their con- 

 tents, while tlie surrounding skin and subcutaneous connective 

 tissue is swollen and edematous, thus producing conspicuous 

 deformity of the affected region of the body (in a case observed 

 by Moussu the head had the appearance of the head of a 

 hippopotamus, as a result of diffuse infiltration of the skin 

 and subcutaneous connective tissue of the face and the entire 

 maxillary space). In rare cases the process is arrested spon- 

 taneously, whereupon the tumor gradually recedes, swellmg 

 subsides^ the tenseness of the surrounding tissue disappears 

 and finally recovery takes place. 



Large tmiiors may also occur on the extremities, Llipke observed 

 an infection of the foot beginning in the interdigital space and resulting 

 in a condition resembling elephantiasis. In a similar case reported by 

 Gulyas the leg was enlarged from the middle of the carpus down to 

 three times its natural size, its surface being wrinkled and covered with 

 nodules, the flexor surface of the pastern containing a granulating 

 ulcer as large as a dinner plate. The calloused subcutaneous connective 

 tissue and the underlving muscles contained numerous nodules ranging 

 in size up to that of a hazelnut, the lymph vessels were much enlarged 

 and numerous nodules were scattered along their course to the sacrum. 

 The popliteal glands formed an extensive cauliflowerdike mass. 



Actinomycomata 

 developing in the 

 wall of the pharynx 

 or in the neighbor- 

 ing areas mil ex- 

 tend into the sub- 

 parptideal region, 

 and interfere with 

 deglutition. As a 

 result rumination 

 is interrupted, ani- 

 mals take less food, 

 there is m ore or 

 less salivation, but 

 in spite of this, the 

 general nutrition 

 may not be serious- 

 ly affected for sev- 

 eral months. Res- 

 piratory difficulties 

 are more p r o- 

 nounced, the act of 

 respiration being 

 attended by loud 



whistling or rat- , .^ . ^ ■ i -i 



tling sounds which are very audible when the head is depressed. 

 When the head is extended tumors in the subparotideal region 

 may be palpated with the fingers either from the exterior or by 

 inserting the hand through the animal's mouth. Animals may 



Fis-. 106. Actinouiycosis of.tlie Lower Jaw. 



