DIAGNOSIS OF TUBERCULOSIS. 
S91 
served that adipose tissue does not decrease the penetrability of 
the rays. Upon fluoroscopic examination I judged cows Nos. 2 
and 3 to be free from tuberculosis, but in subject No. 1, I noticed 
RADIOGRAPH NO. 3. 
Portion of Diaphragmatic Peritoneum with Tubercular lesions. 
a faint opacity near the posterior extremity of the left caudal 
lobe, and concluded that there might be a slight tubercular 
deposit in that region, although the shadow was not so pro¬ 
nounced as in those cases of the first test, which were found to 
be tuberculous. Upon post-mortem examination cases Nos. 2 
and 3 were found to be free from tuberculosis, and No. 1 showed 
in the very spot where I had detected the shadow, instead of 
tubercular deposits, lesions of a chronic circumscribed pleuritic 
inflammation with adhesions. The fact that even an indurated 
serous membrane throws a shadow, somewhat different from 
shadows of other anatomical parts, demonstrates the possibilities 
that might be attained by this method. This latter test taught 
