Congenital Malformations. 575 



There is, on this side, the stump of a thumb, and the 

 fingers are more of a normal shape than those of the other hand. 

 This hand is stated to have remained contracted, while the 

 other improved. G. C. 2547. 



Presented by Dr. Beaidwood, 1880. 



11. 13. Congfenital Annular Constriction of the Fing-ers.— 



Plaster cast of a left hand of a child, illustrating the above. 

 The child, Joseph K., was two years old when the cast was taken. 

 The thumb is absent, and the first, second, and third 

 fingers show a marked constriction close to the joint, between 

 the last two phalanges. G. C. 3409. 



Presented by T. Bubn Mttedoch, M.B., 1892, 



11. 14. Cong-enital Annular Constriction of the Fing-ers. — 



Plaster of Paris cast of the right hand of the same child. 



The thumb and little finger are well formed. The others 

 are more or less stunted. The index finger seems to have a 

 first phalanx, and a constricted stump of the second. The 

 middle finger seems to have a first phalanx, and a bulging 

 stump of the second. The third finger has the first phalanx, 

 and a bulging and elongated stump of the second. 



G. C. 3408. 

 Presented by T. Burn Murdoch, M.B., 1892. 



b. From excess iu deyelopment. 



11. 15. Triple Thumb. — Plaster of Paris cast of the right hand of 

 a child, James C. P., illustrating the above. 



The thumb is replaced by three fingers. None of them are 

 thumb-like, each apparently having three phalanges. 



G. C. 3411. 

 Presented by T. Burn Murdoch, M.B., 1892. 



