D. H. DE Souza 
493 
bone with breadth of right bone a coefficient '77, and height of left bone with 
breadth of left bone a coefficient "81. Note also that there is no great difference 
between the coefficients of the corresponding measurements of the right and left 
hip bones with the sacrum (see first four numbers in the last row or column in the 
table). 
Of only one pelvic bone, the sacrum, have the coefficients of correlation of the 
measurements been recorded previously. Warren*, studying the bones of the 
Naqada race, found that the coefficient of correlation for the height and breadth 
of this bone was '46 for 32 males examined and '31 for 45 females. The latter 
number is practically identical with our finding ("32). The coefficients given by 
him to show the correlation of the measurements of the long bones with one 
another lie between "82 and "98 for the male, and '70 and - 96 for the female, with 
the exception of that for the maximum length of the clavicle with the oblique 
length of the humerus, which is '68 for the male and '53 for the female. Lewenz 
and Whiteleyf , for the bones of the hand, found coefficients with a range '43 to 
'90 for measurements of the same finger, and '59 to "95 for other measurements on 
the same hand. If we omit coefficients between corresponding measurements 
on the two sides our coefficients have a range '30 to '79, and, on the whole, are 
lower than those between the measurements of the long bones together and of 
the bones of the hand together, being nearer to the latter than to the former. 
They are, however, greater than those between the diameters of the skull which 
C. D. FawcettJ found to lie between '27 and '49 for the male and '12 and '28 
for the female. 
It is interesting to note here that the coefficient between the length and 
breadth of the skull is '34 in the male and '14 in the female, while that between 
the length and breadth of the pelvis at the brim, i.e. between the transverse 
diameter and the obstetric conjugate, is '07, and at the outlet, i.e. between the 
antero-posterior and inter-tuberal diameters, '32. 
(3) The finding of the obstetric conjugate and the transverse diameter for the 
dry pelvis. 
The method adopted to determine the non-measurable from the measurable 
diameters was that employed by Prof. Pearson§ for obtaining the stature of an 
individual from the lengths of the long bones. The equation of the regression 
line was used for this purpose. In the equations which follow the lengths of the 
diameters are represented by letters as shown below : 
Obstetric conjugate 0 
Transverse T 
Diagonal conjugate D 
Antero-posterior A 
Inter-tubers / 
Inter-crests K 
Inter-spines S 
Pubic height P 
Height of right hip R 
„ left „ L 
* loc. cit. f loc. cit. t loc. cit. 
§ Phil. Trans. Boy. Soc. Series A. Vol. cxcu. p. 169, 1898. 
Biometrika ix 63 
