354 
M. ARLOING. 
M. Cagny has further indicated the previous administra¬ 
tion of a medicinal substance that exaggerates the secretion 
of the respiratory mucous membrane. 
Should the animal present traces of mammary tubercu¬ 
losis, one can examine microscopically and inoculate the milk 
taken from the lower strata of a conical glass in which one 
has placed a quantity twenty-four hours previously. 
If the subject presents a suspected lymphatic gland, it must, 
without hesitation, be removed, and test inoculations must be 
made with the pulp of the diseased points. 
Suppose that the disease is exclusively confined to the ab¬ 
domen, or that it is impossible to obtain discharge, mucus, or 
non-caseous pulp of a superficial lymphatic gland, that is the 
occasion, if diagnosis is urgent, to have recourse to M. Peuch’s 
method. 
Several series of experiments have shown to M. Peuch 
that the pus from the seton of a cow attacked with tuberculo¬ 
sis contains Koch’s bacillus from the eighth day. Out of ten 
guinea-pigs inoculated with ]/ 2 centimetre of pus, three have 
presented tubercular lesions. Consequently, in the case of 
suspicion, where all the other resources are absent, one could 
seton the suspected animal and inoculate a guinea-pig with 
the pus after the eighth day. 
It is well to inoculate a considerable number of subjects, 
for one must expect to lose some of them by the action of 
septic microbes,which are almost infallably present, in the pus 
of the seton. These accidents, indeed, constitute a serious 
inconvenience. 
We do not for a moment doubt that the transactions of the 
Congress will put on record some new elements of diagnosis, 
and that ultimately the task of the sanitary veterinay surgeon 
will become easier. But, admitting that this will not be the 
case, and that our profession will be still reduced to the means 
of diagnosis summarised by M. Lydtin and us, it will be none 
the less necessary, we believe, to extend to the other countries 
of Europe the measure taken by the French Government. 
Tuberculosis is not the only disease of which the diagnosis is 
surrounded with difficulties. Glanders is often as embarrass- 
