404 BOAKD OF AGRICULTUEE. [Jan. 



evidence where the digestive organs are involved, the animal 

 does not hold its own in flesh and general condition. 



The udder is not infrequently a seat of the trouble, which 

 shows itself in the form of small nodules or circumscribed 

 mammiets, which do not yield readily to the treatment for 

 garget, for which they are often mistaken. The nervous sys- 

 tem is not exempt from its ravages, as seen in cases of paraly- 

 sis or excitement, when the spinal cord or brain is afiected. 



The generative organs are not infrequently involved, as 

 seen in nymphomania or continual bulling. 



That the lesions of tuberculosis are not confined to any 

 special tissue or organ, can be seen by the various symptoms 

 it presents, as well as the difierent ways the virus may 

 enter the system. 



Of 200 cases that were inspected by Goring of Bavaria, 

 in 88 cases the lesions were confined to lung and serous 

 membranes; in 67 cases the lesions were confined to lungs 

 only ; in 33 cases the lesions were confined to serous mem- 

 branes only, and in 12 cases where the disease was in other 

 organs. 



Again, in 1,596 cases of tuberculosis, carefully investigated 

 in the Grand Duchy of Baden, 21 percent, with lung lesions 

 only ; 28 per cent, with peritoneal and pleural lesions only ; 

 39 per cent, with lung and pleura ; 9 per cent, with general 

 tuberculosis ; 3 per cent, with genital organs. 



It is a well-established fact that heredity has an influence 

 in its propagation, and it may be transmitted by the male 

 as well as by the female. Notwithstanding the above fact, 

 animals may be born from tuberculous parents without any 

 predisposition to the disease, and multiply the same as if 

 from perfectly healthy ancestors ; still, the predisposition may 

 be inherited from tuberculous parents. 



That it is an infectious disease has been well established. 

 As long ago as 1780, Dr. Wichmann, court physician at 

 Hanover, stated that phthisis was transmitted when exposure 

 to infection had been frequent or long continued. The experi- 

 ments of Villemin in 1864 caused hira to come to the con- 

 clusion that tuberculosis was an infectious and specific malady, 

 capable of being transmitted from one animal to another. 

 From clinical observations tubercular phthisis is a contagious 



