490 
The Measurements of the Pelvis 
The coefficients of variation of the diameters were compared with those of the 
other recorded measurements which include more than one bone. The coefficients 
of the greater number of the skull measurements* lie between 3 and 5. There 
are a few which are more nearly equal to those in Table I. Some of the measure- 
ments of the face, for example, have coefficients lying between 6 and 8, and that 
of the breadth of the palate is 9"29. The diameters of the pelvis are, however, 
more variable than the bulk of the cranial measurements. 
The average bone measurements given in Table I are also of interest. The 
asymmetry of the female pelvis has been pointed out from time to time by 
anatomists and has been strongly insisted upon by Hassef. According to him 
the height of the left side of the pelvis is greater than that of the right, while the 
breadth is less. The numbers in the table bear out this statement, but, while 
Hasse makes these differences about 1 cm. each, the table shows them to be 
"06 and '03 cm. respectively. In this connection it may be noted that, in the 
20 subjects measured by Dr Deny, the average height of the left hip bone in 
the moist condition was '15 cm. greater than that of the right. Of the three dry 
female pelves used by us for testing purposes one followed Hasse's rule but the 
others varied, so that the average of the three showed the height of the right hip 
bone to be "05 and its breadth - 04 cm. greater than that of the left. The number 
of negative results, though worthy of record, is, however, too small to place against 
the positive findings. 
The coefficients of correlation were next found for every diameter taken with 
every other diameter in turn. The results are summarised in the table. 
TABLE II. 
Inter- 
Inter- 
Trans- 
Diagonal 
Obstetric 
Antero- 
Inter- 
Post- 
Pubic 
crests 
spines 
verse 
conjugate 
conjugate 
posterior 
tubers 
sagittal 
height 
Inter-crests ... 
1 
•79 
•61 
•24 
•17 
•30 
•10 
•11 
•28 
+ -02 
+ -03 
+ -04 
+ -04 
+ -04 
+ -05 
+ -05 
+ -04 
Inter-spines ... 
•79 
1 
•52 
■16 
•13 
•18 
•07 
■13 
•22 
+ -02 
+ -03 
+ -04 
+ -05 
+ •04 
+ -05 
+ -05 
+ -04 
Transverse ... 
•61 
•52 
1 
•09 
•07 
•35 
•32 
•17 
•10 
+ -03 
+ •03 
±•05 
+ -05 
+ -04 
+ -04 
+ -04 
+ -05 
Diagonal conjugate ... 
•24 
•16 
•09 
1 
•91 
•31 
•20 
•21 
•14 
+ -04 
+ -04 
+ ■05 
+ •01 
+ -04 
+ •04 
+ •04 
+ -05 
Obstetric conjugate ... 
•17 
13 
•07 
•91 
1 
•30 
•19 
•21 
•05 
+ -04 
+ -05 
+ -05 
+ •01 
+ -04 
+ -04 
+ •04 
+ -05 
Antero-posterior 
•30 
■18 
•35 
•31 
■30 
1 
■32 
•49 
•07 
+ -04 
+ •04 
+ -04 
+ -04 
+ -04 
+ •04 
+ •03 
+ ■05 
Inter-tubers 
•10 
•07 
•32 
•20 
■19 
•32 
1 
•36 
- -06 
+ -05 
+ -05 
+ -04 
+ -04 
+ -04 
+ -04 
+ -04 
+ •05 
Post-sagittal ... 
•11 
•13 
•17 
•21 
■21 
•49 
•36 
1 
■004 
+ •05 
+ •05 
+ -04 
+ ■04 
+ -04 
+ •03 
+ •04 
+ •05 
Pubic height 
•28 
•22 
•10 
•14 
■05 
•07 
- -06 
•004 
1 
+ -04 
+ -04 
+ •05 
+ -05 
+ -05 
+ -05 
±•05 
± -05 
* Fawcett, C. D., loc. cit. 
t ArchivfUr Anat. p. 244, 1891. Ibid. p. 1, 1910. 
