594 
A. II. QUIN. 
showed scarcely any other symptoms. The mare was old and 
had a jack on each hind leg; was in good condition. Owner said 
the mare had spells when she would fall off. When destroyed 
her womb showed as much or more than any. Ovaries had been 
ulcerated and contained calcareous deposits. Again, you may 
find a mare that is doing her work well, will trot limber, 'show 
nothing, except upper lip drawn to one side or lower lip may 
hang pendulous. Mares of this kind and exposed mares showing 
nothing are the dangerous ones and probably would infect a stal¬ 
lion. 
The power of tolerance seems to vary greatly in mares. We 
can sum up the story in a very few words. 
You must either have the placques or a history of infection. 
As I have before stated, the chronic form of dourine in the 
stallion is little different from the mare, with the exception of 
the oedema of the testicles and sheath and the later atrophy of 
the testicles. 
As to the manner of control and eradication, we are follow¬ 
ing the rules settled by a conference of the state veterinarian 
with federal officers. 
We first quarantine the stallion, get the stud book, and quar¬ 
antine all mares, and would ask each owner the question: “ Have 
you bred this mare to other stallions?” If such was the case, 
we quarantine the others, also all mares bred after this service. 
Then we examine all stallions in the infected district and check 
over their books. All mares known to have the disease have been 
purchased by the government and destroyed. 
The article on Tuberculo-Infcction of Man Through Ani¬ 
mals and Animal Products, on page 545 of this issue, by A. O. 
Zwick, Ph. G., M. D., merits careful reading. The author has 
given much time to the study of tuberculosis in man and in ani¬ 
mals both at home and abroad. During the last international 
congress on tuberculosis he acted as interpreter for the immortal 
Koch. 
