K. Pearson 
Of the other two grandchildren of II. 3, belonging to the deformed group, IV. 7 and IV. 1.5, 
I only know that both feet and hands are deformed. 
Attention must be drawn to the fact that the deformed individual III. 5 has had three 
children all normal, and to the fact that the deformed individual III. 24 has had three children 
born dead, of whom nothing is known as to presence or absence of deformity. 
(5) Of the three individuals III. 21 and her two daughters IV. 21 and IV. 23, 
aged respectively 10 and 2.^ years, the following account has been drawn up by 
Professor Thane from Dr Mackenzie Davidson's radiograms. In the list below a 
plus sign marks the presence of the corresponding bone, the dot its absence. In 
the diagrams of Plates IX and X the defectiveness of the bones of the hands 
Hands 
Mother 
III. 21 
Age 37 
Elder 
Daughter 
IV. 21 
Age 10 
Younger 
Daughter 
IV. 23 
Age 21 
Feet 
Mother 
III. 21 
Elder 
Daughter 
IV. 21 
Younger 
Daughter 
IV. 23 
Eight 
Left 
Eight 
Left 
Eight 
Left 
Eight 
Left 
Eight 
Left 
Eight 
Left 
Scaphoid 
+ 
+ 
• 
+ 
• 
• 
Galcaneum . . . 
+ 
+ 
+ 
+ 
+ 
+ 
Lunar 
+ 
+ 
+ 
+ 
• 
• 
Talus 
+ 
+ 
+ 
+ 
+ 
+ 
Pyramidal 
+ 
+ 
+ 
+ 
+ 
+ 
Navicular 
+ 
+ 
+ 
+ 
+ 
+ 
Pisiform 
+■ 
+ 
• 
• 
• 
• 
Intl. Cuneiform 
+ 
+ 
+ 
+ 
+ 
• 
Trapezium 
■■ 
+ ? 
+ 
• 
• 
• 
• 
Mid. Cuneifoi'm 
+ 
+ ? 
• 
• 
• 
• 
Trapezoid 
+ 
+ 
• 
• 
• 
• 
Extl. Cuneiform 
+ 
+ 
• 
• 
• 
• 
Magnum 
+ 
+ 
+ 
+ 
+ 
Cuboid 
+ 
+ 
+ 
+ 
+ 
+ 
Unciform 
+ 
+ 
+ 
+ 
+ 
+ 
Metatarsal 1 . . . 
+ 
+ 
• 
• 
+ 
• 
Metacarpal 
1 
• 
• 
• 
• 
• 
• 
2 
• 
• 
• 
• 
• 
• 
» 
2 
+ 
+ 
• 
• 
• 
• 
3 ... 
• 
• 
• 
• 
• 
3 
+ 
+ 
+ 
+ 
+ 
4... 
• 
• 
• 
• 
• 
• 
»? 
4 
+ 
+ 
+ 
+ 
+ 
+ 
„ .1 ... 
+ 
+ 
+ 
+ 
+ 
+ 
5 
+ 
+ 
+ 
+ 
+ 
+ 
Digit 1 ... 
+ 
+ 
• 
• 
+ 
• 
Digit 
1 
• 
• 
• 
• 
• 
• 
2 ph. 
2 ph. 
1 ph. 
)i 
2 
• 
• 
• 
« 
• 
• 
fused 
)i 
3 
• 
• 
• 
• 
• 
• 
,, -J . . . 
• 
• 
• 
• 
• 
• 
)) 
4 
• 
• 
• 
• 
• 
• 
3 ... 
• 
• 
• 
• 
• 
• 
)) 
5 
+ 
+ 
+ 
+ 
+ 
+ 
4... 
• 
• 
• 
• 
• 
• 
3 ph. 
3 ph. 
3 ph. 
3 ph. 
3 ph. 
3 ph. 
5... 
+ 
+ 
+ 
+ 
+ 
+ 
3 ph. 
3 ph. 
?2 ph. 
2 ph 
1 ph. 
2 ph. ? 
and feet is indicated by noting the presence of bones by shading in each case, the 
unshaded bones are absent, a key figure indicates the bones of the normal hand 
and foot*. These figures show nothing of the contracted and distorted form of the 
original members, for which the reader is referred to Plates XII to XVI which give 
a few of the radiograms of these three cases. It is fairly possible by the shadow 
of the fleshy parts and the aid of Plate XI to reach a reasonable appreciation 
of the actual appearance of the living individuals. 
The nature of the deformity in these limbs is a partial suppression of the 
digits, together with reduction (absence or fusion) of certain associated carpal or 
* Owing to an oversight of the draughtsman, the names of the bones were inserted on all the 
figures ; it seemed better to leave the redundancy than to go to the labour of redrawing the plates. 
10—2 
