of Fingers and Toes, and of the Phalanges, in Man. 95 
but not bifurcated. ach of the great toes which it supports has 
two phalanges. They are wrapped in a common integument, 
except near the point, where they separate. Hach has a nail, The 
phalanges of the outer lie partly upon those of the inner great toe. 
She has a brother and two sisters, but no member of the family, 
later than the brother of her maternal grandmother (case of J 
H , last related), has any digital variety. She is, through the 
same channel, a distant cousin of the family, already alluded to, 
among whom digital variety exists. 
19. Case of Additional Thumb on one Hand, with distant Hereditary 
Origin. 
J F}——-, et. 8, Argyleshire, has an additional thumb on the 
left hand. The distal end of the metacarpal bone is bifurcated. 
The lesser thumb is situated on the inner side, and has two pha- 
langes. It is 14 inch in length, the larger thumb being 2 inches. 
The distal phalanx of the lesser thumb remains in the flexed posi- 
tion, and cannot be extended voluntarily. The thumb of the right 
hand is longer than usual, and is somewhat finger-like. 
He has one brother and two sisters, neither of whom have 
digital variety, nor have the father or mother. The father’s great- 
grandfather is said to have had some digital variety. The thumb 
on the right hand is longer than usual, and somewhat finger- 
like. 
19 (a). Case of Additional Thumb on one Hand, with Additional 
Metacarpal Bone. Distant Hereditary Origin. 
8 M-—, ext: 7, Argyleshire, has an additional thumb on the 
right hand. It has two phalanges and a metacarpal bone, which 
articulates with the inner side of the metacarpal bone of the greater 
thumb, near the carpal extremity. The larger thumb is 2 inches | 
in length, the lesser 14. It begins to leave the greater thumb op- 
posite about the middle of the metacarpal bone of the latter, and its 
point reaches to the last joint of the greater thumb, along the side 
of which it lies. All the bones are clearly felt. 
She has four brothers and five sisters, who, as well as the father 
and mother, have no digital variety. A first cousin, daughter of a 
maternal uncle, had a double thumb. 
20. Case of Sia Fingers and Toes, with Interrupted Hereditary 
Origin. 
I am indebted to Mr J. Jardine Murray, F.R.C.S. Edinburgh, 
of Brighton, for a note of the case of C G—., et. 12 months, 
who was born with six fingers on each hand, the additional finger 
being on the ulnar side, and six toes on the right foot, The sixth 
toe is on the outer side of the foot, and lies more upon the dorsum 
