892 
J. V LADDEY. 
me also that fluoroscopy is an art of no small importance, in 
which one can only become proficient through practice. I noticed 
in this test that I was much better able to discern the different 
PHOTOGRAPH NO. 4. 
Portion of Thoracic Wall (with rib) with Tubercular lesions in the early stage. 
shadows, as of the heart, ribs, liver, etc., than in the previous 
one, and although a case of tuberculosis in its earliest stages, 
where there is not a sufficiently appreciable calcareous infiltra¬ 
tion present, might escape detection by examination with the 
X-ray in the living animal, an advanced case could not escape 
detection. 
As this mode of diagnosis consumes only from 2 to 4 minutes 
for an animal at the utmost, it would recommend itself not only 
for ordinary diagnostic purposes, but particularly in ante-mortem 
work for meat inspection purposes. It would also be of great 
