1022 
The length of the basis of the cranium, the basi-nasal line, measures 
107 mm. Dvekworrn found as a mean of 26 male Australian skulls 
101 mm., of 5 female skulls 95 mm., and as maximum 109 mm.; 
Frower *) found 102.5 mm. for 22 male Australian skulls, 100 mm. 
for 9 male Tasmanian skulls, and 95.5 mm. for 14 female Austra- 
lian and also for 4 female Tasmanian skulls. The proportions of 
this dimension to the principal other dimensions of the fossil skull 
do not deviate from the recent ones; this cannot be a cause of 
deviation of the capacity. 
Taking all this into consideration, and paying attention to the 
thickness of the cranial walls, which is 10 mm. near the bregma 
in Wadjak I, the capacity of the fossil cranium can, in approxima- 
tion, be calculated from its length, breadth, and height. 
Applying the methods of Manovuvrirr ’), of Lex ©), and of Froriep ‘) 
I find, taking the above mentioned points into consideration, that 
the capacity of the Wadjak I skull probably amounts to about 
1550 em. 
This is a high capacity in comparison with that of the Austra- 
lians and Tasmanians. Turner (1897) determined the mean of male 
Australian crania at 1280, and the maximum at 1514 cm”, of 
female crania the mean at 1116 em.* and the maximum at 1240 
cm”. The Tasmanian race had a capacity perhaps 50 cm.” higher. 
Probably the Wadjak men were taller, at least heavier, than their 
thin Australian descendants, so that they did not exceed these modern 
races in the relative development of the neurocranium to the 
splanehnocranium. 
1) W. H. Frower, On the Size of the Teeth as a Character of Race. Journal 
Anthrop. Institute of Great Britain and Ireland. Vol. XIV. (London 1885), p. 188. 
1) L. MANouvrieR, Sur l’indice cubique du crane. Association francaise pour 
l'avancement des Sciences, 1880, p. 869. — The mean coefficient 1.2 for male 
Polynesians, Australians etc. was used, and the capacity calculated in Broca- 
measure was reduced to real capacity. 
8) Arice Lee, A First Study of the Correlation of the Human Skull. Philo- 
sophical Transactions of the Royal Society of London. Series A, Vol. 196. (1901), 
p. 225—264. Formulae and Tables, p. 243—247. The auricular height, which is 
a necessary factor in these formulae, is 122 mm. in Wadjak I. The formula 
(p. 243) for the male Naqada-Egyptian crania was used, with which the similarity 
in form is relatively greatest (cf. chief dimensions p. 246). . 
*) A. Frortep, Ueber die Bestimmung der Schädelkapazität durch Messung und 
Berechnung. Zeitschrift fiir Morphologie und Anthropologie. Band 18, p. 347. (1910). 
An equal result is also obtained by the method of H. WEtcKER (Die Kapazität 
und die drei Hauptdurchmesser der Schädelkapsel bei den verschiedenen Nationen. 
Archiv fiir Anthropologie. Braunschweig 1886. Band 16, p. 1), after some modi- 
fications of the chief measures required by the particular shape of the fossil skull. 
