90 
A. ZUNDEL. 
because of its easy removal when the parts are being examined, 
and of their easy replacement; thus allowing the surgeon to change 
the dressing whenever he sees fit, without being obliged to remove 
the shoe. 
DI8EASE8. 
Canker of foot (Germ. Strahlkrebs, Hufkrebs).—Under this 
somewhat unscientific, though accepted name, is designated a 
peculiar disease of the feet of solipeds, seated in the secreting 
tissues of the horny box, always beginning at the frog, and char¬ 
acterized by alteration of the horny secretion. Names of a more 
scientific meaning have frequently been proposed, such as gnawing 
ulcer (Bourgelat), schirrus or cancerous carcinoma of the frog , 
carcinoma of the leticular tissue of the foot (Yatel), dartre of the 
plantar cushion , chronic podoparenchydermitis (Mercier), and 
epithelioma'pf the frog (Fuchs). None of these has ever been ac¬ 
cepted, and the old hippiatric name has been retained. 
History. —It is conceded that the old veterinarians were ac¬ 
quainted with canker, and Vegetius evidently speaks of it, but 
not until the time of Solleysel do we find a description somewhat 
complete of the disease and its treatment; Garsault, La Gueriniere, 
Weyrother and others spoke of it, and have expressed various 
opinions as to its etiology, and especially as to its treatment. So 
little progress was discernible in the writings of Bourgelat, Chabert, 
Huzar and Girard, on that very question, and so many false ideas 
were admitted, that Chabert in despair has called canker the 
opprobrium of veterinary medicine. 
It is but recently that serious researches as to the nature of the 
disease have thrown some light on the question, and established 
the important fact that its seat is not in the disorganized horn, 
but in the secreting organs, and that there is an alteration in the 
products of this secretion; that it is consequently to these that 
remedies must be applied. 
We might refer to the writings of Jeannie, Crepin, Hurtrel, 
D’Arboval, Prevost, Mercier, Plasse, Percivall, Dietrichs, Eich- 
baum, Wells, H. Bouley, Keynal, Haubner, Fuchs, Bey, Megnin, 
etc., each of whom has furnished his contingent, while still the 
intimate nature of the disease remains but imperfectly known, and 
