WINDGALL OF THE HEEL. 309 



but not loss of cuticle or hair ; and the result was restoration of 

 the horse to soundness without any relapse thereafter. 



Case II. — The next is a case of enlargement of one of the same 

 bursae without lameness. It is interesting from shewing how gra- 

 dually, sometimes, bursa? become enlarged. 



April, 1845, a troop-horse was brought into the infirmary stable 

 for having a puffy tumour of the magnitude of the section of a 

 large walnut, in the hollow of the heel of the hind leg. It was 

 clearly a case of enlargement of the bursa between the perforatus 

 and perforans tendons. The same horse was shewn to me six weeks 

 before for having a sort of pimply fulness in the same place ; but at 

 that time, there being no attendant lameness, I refused to admit him. 

 It would, therefore, appear that the tumour must have been growing 

 gradually since my attention was first called to it. The horse 

 evinces no lameness from it. Still, on account of its magnitude, it 

 being regarded as an eyesore, something must be done to get rid 

 of it. The heel is a tender part to blister. And yet experience 

 has taught me that nothing is so likely to summarily disperse such 

 a tumour. Accordingly, the acetum cantharidum was applied in the 

 usual manner with a small painter's brush; and the result was 

 effusion of solid, in place of the fluid, matter into the tumour ; 

 which, ultimately, became reduced almost to nothing. 



Case III. — Another horse, an officer's charger, had been known 

 to have for five years bursal tumours in the same situations, in 

 both fore heels, not so large as the one above described ; but no 

 inconvenience had resulted from them. The owner of the horse 

 would not admit that they were windgalls. 



There exist some structures in the body which, albeit from their 

 make or situation, or from both, they are by anatomists regarded 

 as hurscB, are not found to contain synovial fluid like proper hursce 

 mucoscB, though still they appear to answer similar purposes. 

 Between the tendons of the subscapular and coraco-brachial mus- 

 cles is a spurious bursa of this kind ; another covers the summit of 

 the olecranon ; a third forms the cap of the hock. To the diseases 

 of this class of bursae I am now about to draw attention ; and, first, 

 to 



