1905-6.] 
Report on Two Crania. 
307 
of the head in consequence presents a peculiar flattened appear- 
ance. The supramastoid crest stands out with an unusual degree 
of strength, and immediately below there is at the base of the 
mastoid process and immediately behind the ear-hole a deep 
depression. 
The various measurements which were possible are given in 
the following table. Two of the series of skulls dealt with by 
Dr Bryce, both of which have been described by Dr Low, of 
Aberdeen, are included in the table for purposes of comparison. 
Largs Cranium. 
Stoneywood 
Cranium 
(Dr Low). 
Persley 
Cranium 
(Dr Low). 
Maximum length . 
175 (ap. ) 
169 
188 
Maximum breadth 
148 
156 
160 
Cephalic index 
84 *6 (ap.) 
92*3 
85 
Height 
138 (ap.) 
133 
146 
Height index .... 
78*8 (ap.) 
78*7 
77*7 
Height-breadth index 
95 ’1 (ap. ) 
85*2 
91*2 
Frontal angle 
90° (ap.) 
97° (ap.) 
90° (ap.) 
Angle of glabello-bregma line 
65° (ap.) 
62° (ap.) 
65° (ap.) 
Frontal Curve index 
16*5 (ap. ) 
21*9 (ap.) 
20 (ap.) 
Length of glabello-inial line 1 
(base line) . . . / 
175 (ap.) 
Maximum height of Calvaria . 
105 
Index of Calvaria height 
60 (ap.) 
From the above figures it will be noted that the Largs cranium 
not only presents a high degree of brachycephaly, but also a very 
high altitudinal index. In the Scottish crania examined by Sir 
William Turner this index presents an average of 70*9, a small 
proportion only being hypsicephalic, as is the case with the three 
crania included in the above table, as well as almost all the other 
crania which belong to this type (see Bryce’s table). 
Outline tracings were taken of the longitudinal arc of the 
photographs of Dr Low’s Stoneywood and Persley specimens, 
which are given by Dr Bryce. These were then enlarged until 
the base line (glabello-inial line) in each attained a length equal to 
that of the photograph of the Largs cranium. The three figures 
thus obtained have been superimposed in the accompanying 
illustration, with the view of bringing out the similarity of type 
exhibited in the quality of the cranial arc. 
