TUBERCULOSIS. 
351 
that the ordinary clinical signs may suffice, if not to recognise 
at the first onset phthisis in any subject whatever, at least to 
discover the cases of tuberculosis in a building where one 
knows that the disease has shown itself. 
M. Grissonnanche thinks that, except contagious pleuro¬ 
pneumonia, the non-tubercular diseases of the lung and pleura 
are rare in the ox, so that when one observes in a bovine ani¬ 
mal irregular respiratory movements, especially during inspi¬ 
ration, a harsh bruit due to pleural friction, a slight abortive 
cough, difficult to provoke by compression of the trachea, an 
exaggerated sensibility on percussion of the costal region, and 
tumefaction of the retro-pharyngeal glands, one may conclude 
that there is thoracic tuberculosis. 
M. Cagny, starting from the fact, demonstrated by him, 
that the contagion of tuberculosis is an easy matter in a build¬ 
ing that has contained an affected animal, views as suspected 
every animal that affects any sign of disturbed health what¬ 
ever—every animal that does not profit by the nourishment 
that it receives. The veterinary surgeon ought then to ex¬ 
amine with the greatest care the suspected subjects, he will 
endeavor to hear them cough, and then he will proceed to 
the examination of the chest. The emaciation that accompa¬ 
nies tuberculosis, according to M. Cagny, is not absolute ; on 
the contrary it appears to him relative to the state of fatness 
( embonpoint ) of the other animals in the same building; it will 
therefore be necessary to compare with one another the 
subjects submitted to the same hygienic conditions. 
M. Cagny, again, recommends an examination of the 
degree of adhesion of the skin to the subjacent tissues, by 
the aid of a needle or the pointed canula of a hypodermic 
syringe ; in a tuberculous ox the canula penetrates with diffi¬ 
culty across the skin and the subcutaneous tissue. 
The pulmonary lesions almost always entail an enormous 
swelling of the bronchial lymphatic glands ; hence, to the pre¬ 
ceding symptoms there come to be added intermittent indi¬ 
gestions characterised by meteorism, a difficulty of respiration 
evidenced by a roaring sound, an obstacle to the venous cir¬ 
culation shown by repletion of the jugulars or by a venous 
pulse. 
