[*9 1 



point of fupport •, the tendon, coronary, and 

 nut-bones become fractured upwards and back- 

 wards by the pattern, which alfo had an 

 oblique pofition, and downwards and forwards 

 by the foot or coffin bone, which here acts as a 

 wedge. 



The nut-bone is fometimes fractured by the 

 lower and back part of the coronary-bone 

 alone : but although thefe bones are fractured 

 in the manner I have juft mentioned, at the in- 

 flant a horfe gives a fpring, there happens no 

 luxation of thefe bones, becaufe of the manner 

 of their being tied and fecured all round by the 

 ligaments, the tendons, cartilages, and the con- 

 ftruction of the hoof which inclofes them and 

 all that depend on them. 



In all the horfes feet I difTected, immediately 

 after thefe accidents, I found the ïendo Acbillis 

 ruptured, and had a notion that the fracture of 

 the corcnary-bone in three pieces ought always 

 to be followed by the rupture of the tendon, 

 particularly after the foot is pared ; or that 

 there are froft nails or raifed heels to the fhoes, 

 fo that the frog is thrown up from its point of 

 fupport -, which will appear when we treat of 

 fhoeing. 



We diftinguiih fractures of the coronary- 

 bones in railing the foot by the lower part -, the 

 foot muft be drawn forward, and preffed up- 

 on the coronet with the thumb, and if 

 there is a fracture, a ratling will be perceived ; 



when 



