2i6 The Management and Diseases of the Dog. 



is sometimes seen in smooth-coated toy dogs, especially 

 black and tans. This baldness, which is chiefly confined to 

 the crown of the head and the ears, is caused by deficient 

 nutritive functions, general debility; and the pernicious 

 system of in-and-in breeding. 



Treatment. — ;Nourishing food ; vegetable and mineral 

 tonics ; bald parts to be well brushed ; cantharidine appli- 

 cations. 



WARTS. 



The dog, though not perhaps so frequently as the horse, 

 is nevertheless very subject to warts. The eyelids, ears, 

 mouth, and lips are the situations most favourable to their 

 growth ; not unfrequently they are seen on the penis. 



" A wart is a state of hypertrophy of the papilla: of the 

 derma, attended with an increased production of epidermis. 

 Warts are usually of small size, and of a rounded figure, 

 verruca simplex ; sometimes, however, they appear in the 

 form of bands several lines in breadth, and of variable 

 length. They are generally insensible, rough to the touch, 

 and their medium projection from the surface is about a 

 line." 



" When warts have grown to some length, their ex- 

 tremity becomes rough, and their fibrous structure is 

 distinctly apparent ; it not unfrequently happens that warts 

 of long standing split and break up in the direction of these 

 vertical fibres, verruca lobosa." 



" Warts are generally known as isolated growths, or dis- 

 persed in scanty groups on different parts of the body ; 

 but they are sometimes met with so numerously as to 

 constitute an eruption of warts."* 



Treatment. — Excision, ligature, or caustic. In isolated 

 warts the two former are most advisable, and the occasional 

 application of caustic afterwards may follow. Of caustics, 



* Wilson's " Diseases of the Skin," pp. 546, 547. 



