1 6 Guide to the Fossil Remains of Man 
difficult to determine, because the middle line has to be found by- 
inference ; but the impressions of the blood-vessels (meningeals) 
and part of the median longitudinal blood-sinus on the inner 
surface are unusually distinct (Plate I), while slight indications 
of the median longitudinal (sagittal) suture between the two 
parietal bones are seen both in front and behind, so that the 
middle line is determinable within three or four millimetres. In 
any case the skull must have been very broad in proportion to 
its length (brachycephalic), the crown is low and flattened 
compared with that in an ordinary modern man (fig. 3), and the 
back of the skull is remarkably low and broad, indicating a very 
thick neck. 
Enough of the forehead is preserved to show that it is as steep 
as usual in modern man, without any overhanging or prominent 
bony brow ; but the bounding ridge on each side, which marks 
the front limit of the space for the temporal muscle, is peculiar in 
approaching nearest its fellow, not just above the eye, but higher 
up where it crosses the suture (coronal) between the frontal and 
parietal bones (Plate I). This peculiarity, the relative breadth 
of the back of the head, and perhaps other small features, are 
suggestive of the apes rather than of typical man ; but on the 
whole the skull is absolutely human. The temporal bone, with 
its articular surface for the lower jaw, is especially human in 
every detail (Plate II), its only noteworthy feature being the 
inclination of the inner part enclosing the organ of hearing 
(petrosal), which agrees with that of the later Mousterian skulls 
in causing the outer face of the temporal lobe of the brain to 
slope downwards and inwards, instead of being nearly vertical. 
The petrosal part of the temporal bone, however, is about a 
centimetre longer than usual in modern man, implying that the 
width of the base of the skull was slightly greater than the normal. 
The small gently arched nasal bones resemble those of low races 
of men, but the face must have been unusually large. 
The cast of the brain-cavity taken from the reconstructed 
skull is of very unsymmetrical shape, the left cerebral hemisphere 
being much the larger, with a prominence behind. This arrange- 
ment probably implies right-handedness. So far as they can be 
distinguished, the convolutions of the brain are comparatively 
simple, and those parts which develop latest in a modern man 
are remarkably under-developed. In fact, according to Prof. 
Elliot Smith, the whole structure must be regarded as the most 
primitive and most ape -like human brain hitherto discovered. 
