40 BULLETIN OF THE LIVERPOOL MUSEUMS. 
The interior of the cranium can be examined by the light afforded by the 
parietal perforations. A very remarkable condition is found in the basal 
fossee. The posterior fossa is large and capacious. It occupies more than 
two-thirds of the base of the cranium, and is covered by the greater part of 
the vault. The middle and anterior fossz are very small. Both are per- 
forated and excavated by holes and depressions of various size, and are 
separated by the lesser wings of the sphenoid bone, which are distorted by 
the formation of osseous plates erected on their upper surfaces, so as to still 
further deepen and narrow the anterior fossa. The floor of this fossa is 
sloped towards the median line and is convex; it is remarkably deep over 
the cribriform plate, which is concave in the antero-posterior direction. The 
pituitary fossa is well marked. The anterior and middle fossz are roofed 
over by the narrow, sloping frontal bone, which still more limits the capacity 
of this part of the cranium. All the fossz are enlarged at the expense of the 

Fig. 3.—LATERAL VIEW OF THE EASTRY CRANIUM. 
bones in the base of the skull. Both basi-sphenoid and _basi-occipital bones 
are much thinner than usual. In the posterior fossa an abnormal arrange- 
ment of the venous sinuses was seen to have existed. On the left side the 
lateral sulcus is absent, except close to the jugular foramen. Instead, there 
is a well marked groove in the position of the occipital sinus, extending from 
the internal occipital protuberance to the foramen magnum, and along its 
margin to the jugular foramen of the left side. Here it is joined by a deep 
groove half an inch in length, corresponding to the terminal portion of the 
lateral sulcus. On the right side the lateral sulcus has its usual form and 
course. 
Measurements. 
The measurements were difficult to obtain, as the obliteration of sutures 
left the determination of the standard points doubtful. 
Cranial Capacity, 1225 ¢.c. (measured with mustard seed). 
