214 Variation and Correlation of the Human Skull 
The great general likeness between the sexes in English and modern 
Germans is in marked contrast to the sexual diversity that prevailed amongst 
the Naqadas. 
TABLE VI. 
Specification of English CVania. 
O) lOOBIL 
(y) lOOEjL 
{act) Profile Angle 
{6) Upper Face Index ... 
Zygomatic „ „ * , ... 
(X) Orbital Index + 
(k) Nasal Index ... 
{jx) Palate Index J 
Alveolar Index ^ 
Dolicliocephaly 
Chamaecephaly 
Mesngnathy 
Narrow faced 
Leptoprosopy 
Chamaeconchy 
Mesorrbiny 
Leptostapbyline 
94-42 
Dolichocephaly 
Cbamaecephaly 
Mesognathy 
Narrow faced 
Leptoprosopy 
Mesoconchy 
Mesorrbiny 
Leptostapbyline 
94-84 
Botb sexes alike 
Botb sexes are on tbe 
borders of orthocepbaly, 
tbe male ratber more 
closely tban the female 
The female tends rather 
more tban tbe male to 
hyperortbognathy 
Tbe female is the narrower 
^ index 53-77 ; $ index, 
54-82 1 
Left eye index practically 
tbe same as the right 
ej^e index in botb sexes 
Botb sexes alike, and not 
far from leptorrbiny 
Tbe female tends more to 
mesostaphyline 
Sexes practically alike § 
General Points. 
(a) The average male skull is significantly larger than the average female 
skull, except in the case of the breadth of the eye orbit, in regard to which the 
sexes are practically alike. 
(b) In both sexes the breadth of the skull is significantly greater than the 
height, the excess being greatest in females. 
(c) The left orbit is practically the same as the right orbit for both length 
and breadth in both sexes, and in the case of the breadth both sexes are practically 
alike. 0. D. Fawcett found the left orbit to be larger than the right in the 
Naqadas, and has collected cases of asymmetry in other parts of the skeleton||. 
* These indices are simply the ratios of the means of the characters. The alveolar index 100 OLjLB 
is not considered in the Frankfurter Verstcindigung. The zygomatic upper face index is 100 O'HjJ. 
t For Altbayerisch skulls this index is, for 52-4; for ? 52-8; for Wiirtemberger, t? 53-6, ? 52-9; 
for the small series of French soldiers 52-3. 
J The methods of measurement which I have adopted have to be borne in mind ; if I had measured 
by the Frankfurt Concordat both sexes would have shown chamaeconchy, but would have remained 
leptostapbyline. 
§ For Naqadas this index is for cf 95-35; for ? 95-95. 
II Biometrika, Vol. i. p. 436. 
