212 VETERINARY SURGICAL THERAPEUTICS. 
on cattle and only one on a horse are on record (Cadiot, Gilbert and 
Roger). 
External tuberculosis is also rare in dogs. Miiller has reported one case 
analogous to one of ours. It was that of a seven-year-old slut belonging 
to a consumptive ; she had shown first at the lower part of the neck a 
subcutaneous tumor as big as an egg, which later on softened and gave 
tise to a fistulous wound. External tuberculosis in cats has been recorded 
by Nocard and Jensen. (See Zubercular Arthritis.) 
The diagnosis can be established with certainty by a bacterioscopic ex- 
amination. Injections of tuberculine give also rare results. 
Upon the statements of Louis, it was believed for a long time that 
surgical tuberculosis existed always with an infiltration of the lung, and 
that consequently surgical interference was useless. But recent obsérva- 
tions have shown that the tuberculous virus remains sometimes for a 
certain length of time isolated in the place where it has been deposited, 
and that the extirpation of the primitive focus may be followed by re- 
covery. 
For tuberculous cattle sanitary laws prescribe special measures. 
As a general rule tuberculous affections of-other species are dangerous 
to man; veterinarians must advise their being destroyed. In the rare 
cases, where he must interfere for small animals or fancy birds, he will be 
guided by the rules for the treatment of tuberculosis in the case of man. 
Against the lesions of the skin and of the connective tissue, one must not 
stop at local applications, light cauterizations, or antiseptic applications, 
but must have recourse immediately to the eradication of the diseased 
center, which continually spreads the germs of contagion in the surround- 
ings. The lumps of dupus, ulcerated tumors or cutaneous growths should 
be fully removed. The actual cautery should be employed instead of the 
bistoury, which opens the blood vessels and exposes the system to secon- 
dary inoculations. The wounds should be treated afterwards with iodo- 
form. A local relapse implies a new exeresis. If the surrounding glands 
are involved, they must be removed. 
Also bony lesions should be treated by excision and the use of the 
curette. Fungous arthritis should be treated by immobilization of the 
joint and injections of iodoformed vaseline into the fistuler those of 
chloride of zinc (1-10) into the zone neighboring the morbid center 
(scleragenous method of Lannelongue). 
Hygienic and medical treatment must go along with the surgical in- 
terference. Good feeding, cod-liver oil, creosote and guiacol, also in- 
jections of creosote or gayacoli oil are excellent adjuncts of treatment. 
1 Loerlin, Monatschrift fiir Thierheilkunde, 1874, p. 261, 
