ff^F' OF TTW? 



I UNIVERSITY 

 ZOOLOGICAL DISTRIBUTION OF DISEASE. 269 



objects for veneration. In addition to the modes of 

 origin mentioned, horns may arise from the overgrowth 

 of nails, and also in the scars of burns ; these have no 

 connection with our present study. 



Horns arising in sebaceous cysts, or from warts, have 

 been recorded in man, oxen, sheep (fig. 133), goats, dogs, 



FIG. 133. The head of a Sheep with a large wart-horn on its 

 head. 



and hare. I have recently seen one growing near the 

 hock of an eland : in birds they have been recorded in the 

 parrot, greenfinch, linnet, canary, and oyster-catcher. 

 The museum of the Royal College of Surgeons, London, 

 contains an admirable collection of such horns, one of 

 them which grew from the flank of a ram, and from its 

 structure is clearly a wart-horn, is the largest on record, 



