Symptoms in Cattle. 553 



however, when the process spreads to the serous coats of the 

 sexual organs there is unusual excitement during the period 

 of oestrum. If served by a male they either do not conceive or 

 they are apt to abort at about the middle of gestation. In 

 later stages of the disease this excitement becomes continuous 

 (nymphomania) and may then also exert an unfavorable in- 

 fluence upon the nutrition of the animal. Otherwise this form 

 of tuberculosis does not necessarily interfere seriously with 

 nutrition and animals may grow fat even with advanced and 

 extensive disease. The presence of the latter is often unsus- 

 pected until on post-mortem examination after the animals are 

 ^slaughtered. Still, in the advanced stage of the disease the 

 affection of other organs, especially the liver and the spleen 

 and also the mesenteric Ipnpli glands will exert a disturbing 

 influence on the organs of digestion and gradually anemia and 

 emaciation become more and more evident. 



Large tumors on the peritoneum may now and then be 

 accurately located. The presence of large pearl nodes on the 

 left side of the paunch or on the opposing peritoneal mem- 

 brane may be palpated by applying the hand to the left flank. 

 Tumors in the pelvic cavity, especially when located near the 

 internal sexual organs may occasionally be palpated through 

 the rectum. Any large tumors with irregular surface, or masses 

 of smaller structures of hard consistency, when present in the 

 pelvic cavity, may be looked upon as tuberculous excrescences. 

 These structures do not take finger impressions and the small 

 ones if loosely imliedded in connective tissue or if they are 

 pedunculated usually slip from the grasp (Storch). Enlarged 

 sacral, lumbar, medial iliac and mesenteric glands may also 

 be palpated. 



In the course of the digestive tract tuberculous changes 

 may, in rare cases, be met A\T^th in the mouth, viz., the mucous 

 membranes of the pharynx, the hard palate and the fauces. 

 Here there are irregular ulcers with firmly adhering grayish- 

 yellow, cheesy deposits, sometimes knobby borders. The sur- 

 face of the tongue, especially at the point just anterior to the 

 eminence of the dorsum of the tongue may have similar 

 ulcers. Its substance may contain firm nodules or be uniformly 

 indurated which condition interferes more or less with the 

 movements of this organ also mastication and deglutition 

 (Moussu). 



The sj^nptoms of intestinal tuberculosis are very indefinite. 

 Digestive disorders which are hardly ever absent in advanced 

 tuberculosis are not infrequently caused by an involvement of 

 the intestines but, on the other hand, digestive disorders may 

 be entirely absent even in advanced disease of these organs. 

 The most significant s^^nptoms are colicky pains and constipa- 

 tion alternating ^vith diarrhea. The intestinal evacuations may 

 be quite fluid and not infrequently mixed with mucus and pus. 

 Sometimes there are streaks or even clots of blood. Occa- 



