536 



t 



3190. The left os magnum of a Horse. Hunterian. 



3191. The right unciforme of a Horse. Hunterian. 



3192. The right metacarpus of a Horse. 



There is an ossification of a flexor tendon, like a third splint-bone at the back of the prin- 

 cipal metacarpal or 'cannon-bone.' This bone answers to the metacarpal of the middle 

 digit in the pentadactyle foot. Of the two lateral splint-bones the inner bone is a rudi- 

 mental metacarpal of the second digit, the outer one that of the fourth, the digits which 

 have no representatives in the Horse's fore-foot being those answering to the thumb and 

 the little finger of the human hand. The inner splint-bone is anchylosed to the cannon- 

 bone, which is also diseased at the distal end. The cannon-bone has a single canal for the 

 medullary artery which enters at the back part, at the junction of the upper with the middle 

 third*. 



Presented by Sir P. de M. Grey Egerton, Bart., M.P. 



3193. The proximal phalanx of the principal digit of the Horse. 



It answers to that of the middle digit in the pentadactyle foot, and is called the ' great 

 pastern-bone ' by Veterinarians. 



Presented by Henry Cline, Esq. 



3194. The middle and ungual phalanges of the same digit, with the interposed sesa- 

 moid bone. 



The middle phalanx is called the ' small pastern-bone,' the ungual one the ' coffin-bone,' 

 and the sesamoid is the ' coronet-' or ' nut-bone ' of Veterinarians. 



Presented by Henry Cline, Esq. 



3195. The three phalanges of the digitus medius, forming the chief part of the fore- 

 foot of the Horse. 



There are signs of ossific inflammation in each of the bones. 



Presented by Henry Cline, Esq. 



3196. The two ossa innominata of a Horse. Hunterian. 



3197. The right femur of a Horse. 



It is characterized by the partial division of the great trochanter, and by the addition of a 

 third trochanter from the outer part of the shaft. The medullary artery enters the middle 

 of the shaft at its postero-internal side, and inclines slightly upwards. 



Hunterian. 



