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narrowest place 46.5 mm. in Wadjak IL. For 7 Australians, according 
to Frizz, the breadth is on an average 37 mm., maximum 40 mm.). 
This applies particularly to the mandible of Wadjak II, which 1 
consider as male, but to a certain extent also to the other mandible, 
of which only little is preserved. 
The symphysial or mental angle (between the infradental-pogonium 
line and the base line) measures 96°. Though there is a strongly 
developed protuberantia mentalis, yet the perpendicular dropped 
from the infradental point or incision, falls 3 mm. before its most 
projecting point, the pogonium. When this projection, which makes 
the impression of being a separate formation, is thought eliminated, 
the angle of the chin would be 102°. The other symphysial or mental 
angle, that with regard to the alveolar line, measures 80°. It would 
attain 86°, when the protuberantial swelling did not exist. For the 
Neandertal-mandibulae, which possess no or very small protube- 
rantia, the angle is still considerably greater. La Naulette 94°, Spy 
106°, Mauer 105°. From seven Australian mandibles Frizz (like 
Wercerer from fifteen) found a mean of 83° for this angle, the maxi- 
mum was 94°. But this greater angle of the Australians is also 
partly owing to the mostly slight development of the protuberantia 
mentalis. The true angle of inclination of the corpus mandibulae at 
the symphysis (without that projection), can yet be called peculiarly 
great in Wadjak Il. Hence Frizz’s “Korrekturvertikale” i.e. the 
perpendicular drawn to the alveolar border line, close along the 
deepest point of the chin concavity, only just intersects the protu- 
berantia of Wadjak IL. Noteworthy of this fossil mandible is 
further the relatively thin inferior border or base, and the situation 
of the small fossae digastricae, behind this border, 23 mm. apart 
from each other, reminding of the condition of Hylobates syndacty lus. 
In comparison with the dentition of the Wadjak Man, another 
find may be mentioned of a fossil man related to the present 
Australian race, the skull of Talgai in Queensland, Australia, which 
was discovered in 1684, mentioned by T. W. E. Davip and 
J. T. Wirson *) in 1914, and elaborately described by Stewart ARTHUR 
SmitH 7) in 1918. This skull of a “male youth” (for m, was still 
unerupted), though cracked im situ into numerous fragments, which 
are more or less considerably dislocated, but held in position by 
thin layers of calcareous earthy matrix cementing them together, 
1) Reports of the British Association for the Advancement of Science. Sydney 
Meeting. (1914), p. 531. — Cf. also ,,Nature”. London 1915, p. 52. 
*) Srewart ARTHUR SMITH, The Fossil Human Skull Found at Talgai, Queens- 
land. Philosophical Transactions of the Royal Society of London. Series B, Vol. 208, 
pp. 351—387. 7 Plates. Londen 1918. 
