M. A. Lewenz and M. A. Whitbley 
351 
left. In only 3 does the left predominate. The differences are, however, in each 
case within the probable errors of the differences. It is therefore hardly possible 
to assert definitely that the metacarpal bones of the right are more closely corre- 
lated than those of the left hand. 
{b) A metacarpal bone has always more correlation with a second of the 
same series than with any other more distant metacarpal bone*. 
The only exception to this rule is the correlation of the left-hand metacarpal 
bone of the little finger with those of the middle and index fingers, but in this case 
the difference of these correlations is well within the probable error of the differ- 
ence, i.e. it is not significant. 
The manner in which the correlation of digits arranges itself according to 
situation is a striking demonstration of how it is truly organic in character, and 
how impossible it is to treat such organs as " homotypesf." 
We next turn to the proximal phalanges and we have the following results: 
TABLE IV. 
Proximal Plialanx. Right Hand. 
46 Cases 
Bp, 
lip. 
Bp, 
1 
•837 + -030 
•818 + -0.33 
•803 + ^045 
•854+^027 
■837 + -030 
1 
•937 + -012 
•893 + -020 
•894+ -021 
•818 + -033 
•937 + '012 
1 
•949 + •OlO 
•916 + ^016 
Rp, 
•803 + -045 
•893 + -020 
•948 + •OlO 
1 
•917 + ^016 
Rp^ 
•854 + -027 
•895 + -021 
•916 + ^016 
•917 + ^016 
1 
TABLE V. 
Proximal Phalanx. Left Hand. 
47 Cases 
Lpi 
Lp, 
LPi 
Lp, 
1 
•871 + ^024 
•864 + ^025 
•823 + ^032 
■111 + ^039 
•871 + ^024 
1 
■910 + -017 
•879 + ^023 
•857 + ^026 
•864 + ^025 
•910+^017 
1 
•927 + ^014 
•859 + •026 
Lpi 
•823 + ^032 
•879 +'023 
■927 + -014 
1 
•908 + ^017 
J^pb 
•777 + ^039 
•857 + -026 
■859 ± ^026 
•908 ± •on 
1 
Here the correlations are, if anything, somewhat higher on the average than in 
the case of the metacarpal bones. 
* Whiteley and Pearson : loc. cit. p. 131. 
t Bateson : R. S. Proc. Vol. 69, p. 199; Biometrika, Vol. i. pp. 341, 342. 
