244 VETERINARY SURGICAL THERAPEUTICS. 
with caustics, ligature or the bistoury. Sulphuric, nitric, muriatic, acetic 
or chromic acid can be used. After scraping the superficial layer which 
covers them the caustic fluid is applied on the top of the growth with a 
glass or wooden rod, being careful not to touch beyond the outlines of 
the affection. The cauterized layer dries off and sloughs after a few days. 
The cauterization may be repeated several times. Arsenious acid and 
several arsenical products, used as powders, dusted on the surface of 
the warts, brings on mortification and sloughing. Boudeaud has recom- 
mended repeated applications of the following preparations : 
Grams 
Arsenious acid ..... ccc cece cee rece e eee nee tener teen tee eeeees 5 
Sabine powder } =n 3 
Bainecied eam arate yom ee mera re ee 
Simple cerate...... 0... cece eee eee rete e eres eee e tena nees 36 
Corrosive sublimate ..... ccc ccc c cece cece etter nee en ec ewenenee I 
Resinated collodion ........ ccc eee e eect cette en eee teen eeee 30 
In the case of large animals, where the treatment must be quick and 
economical, the best way is to remove these tumors with the ecraseur, 
the bistoury, or to burn their bases with the red-hot iron. In dogs, silk 
ligature is preferred, or slight and repeated cauterizations until they are 
entirely removed. 
Multiple fibromas, adenomas, osteomas (Leblanc), newromas and the 
other neoplastic species are more rare. If they are numerous, interfer- 
ence is difficult and often useless. When they are isolated the treatment 
consists in the free removal of the neoplasia. The adenoma of Liénaux 
was not adherent to the skin: its extirpation was easy. Bony plates of the 
subcutaneous connective tissue (Liard, Laquerriére) are removed almost 
always successfully. 
Epitheliomas and cancroids are ordinarily met in the neighborhood of 
natural openings, most commonly the lips. They are peculiarly common 
on olddogs. Their clinical characteristics are well known : at first a small, 
hard, invading tumor; later, painless or almost painless ulceration, sharply 
outlined at the top, dry at the base, grayish in color, surrounded with in- 
durations and accompanied with specific lymphangitis and adenitis. At 
the beginning recovery has sometimes ‘been obtained with arsenical 
caustics. Chlorate of potassium in powder or saturated solution and 
methylene blue have succeeded in some cases. But total extirpation of 
the neoplastic center is still the chosen treatment. It is important to 
operate early, before the appearance of the adenopathies. (See Zreatment 
of Tumors in General.) 
Cutaneous and hypodermic sarcomas exist ordinarily with visceral growths 
of the same nature, more or less generalized. 
