72 ABNORMAL CONDITIONS OF THE LIMBS. 



the second metacarpal bone, which bears a large accessory 

 toe inside its normal digit. The accessory toe simulates 

 the inner digits of the right manus. It cannot be iden- 

 tified with any normal digit. 



Presented by Mr. E. Horniblow, 1872. 



298. The skeleton of the right manus of a Pig, which is almost 



completely double. The accessory parts apparently belong 



to the left side of the body. 



The condition of this manus, as well as the succeeding, is appa- 

 rently identical with that of a human hand described by Jardine 

 Murray (Med.-Chir. Trans, vol. xlvi. p. 29), a photograph of which 

 is preserved in the Museum of the Middlesex Hospital. 



Hunterian. 



299. A similar specimen. Hunterian. 



300. Part of the skeleton of the left manus of a Calf with a 



supernumerary toe on its inner side. The epiphysis of 

 the third metacarpal bone is very broad and is partially 

 divided into two portions, and its shaft is correspondingly 

 broad below. 



301. The manus of a small Horse, with an accessory hoof and 



imperfect digit growing from the inner side of the distal 

 extremity of the middle metacarpal bone. The splint- 

 bones are normal, and there is no evidence to show that 

 the hoof and digit represent the second. As in the 

 above and some of the following cases, it has apparently 

 the characters of a digit from the other manus. The epi- 

 physis of the metacarpal bone is also partly doubled. 

 This foot is described in the Osteological Catalogue as No. 3206. 



Purchased. 



302. The left second and third metatarsal bones of a Horse, with 



excessive development of the second, which ends below 

 in a trochlear extremity for articulation with a digit *. 



303. The right and left third metacarpal bones of the same Horse, 



with a supernumerary second metacarpal of large size, 

 having an inferior trochlear surface for a digit attached 

 to each. An internal splint-bone, however, existed as 

 usual, a fact which can readily be made out from the 



* A similar case of development of a splint-bone in the manus is 

 figured and described by Wood-Mason in the Proc. Asiat. Soe. Bengal, 

 1871, p. 24. 



