354 BOVINE PATHOLOGY. 



Dermopilous Cysts are involutions of the integument. 

 They are occasionally found in various parts of the body, 

 and sometimes so deeply placed in viscera, such as the 

 testis, that the difficulty in attributing them to growth 

 from the skin has compelled pathologists to consider them 

 specimens of ^'foetus in foetuj' Generally a small fistu- 

 lous opening from the cyst discharges a fluid consisting 

 of watery matter and epithelial debris on to the surface 

 of the body, and a few long hairs may protrude through 

 the opening. The discharge is sometimes offensive ; 

 then the cyst may be removed by means of the knife 

 (see 'Edinburgh Veterinary Eeview,' vol. v, p. 593). 



Elephantiasis — ^hypertrophy of the subcutaneous areolar 

 tissue, with increase in its density — is very rare in the 

 ox. Under this heading has been described a specimen 

 ofe-skin disease of the calf, in the Museum of the Royal 

 Veterinary College. The skin in this animal is in plates like 

 that of the rhinoceros, but on a smaller scale. This seems 

 a case of the disease described in man as Scleroderma. 



Waets — '^ angle berries " — verrucce — are epidermic 

 growths primarily, but subsequently the true skin becomes 

 involved and hypertrophied, and thus are produced on the 

 surface of the body tumours of various sizes, confluent or 

 distinct. These, when subjected to friction, ulcerate, and 

 thus ugly fungus-like masses, in a raw condition, project 

 from the surface. They are most unsightly, and bleed on 

 the slightest pressure; are principally seen about the 

 genital apertures, eyelids, lips, and teats. We are not 

 assured of the cause of these growths, but in the majority 

 of cases dirt seems to be the exciting influence. Irrita- 

 tion of any kind may give rise to these circumscribed 

 dermal hypertrophies. A most singular case, reported by 

 Youatt, indicates their constitutional origin in some cases : 

 "At uncertain intervals, from six to nine or ten months, 

 a cow suddenly lost flesh, her coat stared, she would 

 scarcely eat, and at length rumination was entirely sus- 

 pended; then would appear, and nearly all over her, and 

 particularly about the udder and in the mouth and on the 

 evelids, a thick crop of warts, varying from the size of a 



