52 



HORSES. 



RING-BONE. 



Ring-bone is not a conversion of cartilage into bone, like 

 side-bone ; it is a growth of bone on bone caused by concussion 



Case of Ring-bone and Side-bone 



OCCURRING IN A HEAVY DrAY HoRSE. 



1. Os suffraginis. 



2. Os coronse. 



3. O5 pedis. 



4. Complete union by ossific matter between 



the OS pedis and os coronas, but still 

 incomplete in the joint above. 



5 Complete union of the three bones. 



and subsequent inflammation of the covering membrane 

 (periosteum). 



