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point of fupporc ; the tendon, coronary, and 

 nut- bones become fraftured upwards and back- 

 wards by the pafrern, which alfo had an 

 oblique pofition, and downwards and forwards 

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

 wedge. 



The nut- bone is fometimes fradlured by the 

 lower and back part of the coronary-bone 

 alone : but although thefe bones are fra6lured 

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

 ftant 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- 

 llrudlion of the hoof which inclofes them and 

 all that depend on them. 



In all the horfes feet I diflefled, immediately 

 after thefe accidents, I found the 'Tendo Achillis 

 ruptured, and had a notion that the fradture of 

 the coronary-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 ihoes, 

 fo that the frog is thrown up from its point of 

 fupport •, which will appear when we treat of 

 fhoeing. 



We diftinguifh fradlures of the coronary- 

 bones in raifing the foot by the lov/er part -, the 

 foot mufl be drawn forward, and prefled up- 

 on the coronet with the thumb, and if 

 there is a fradure, a ratling will be perceived ; 



when 



