124 Rdationship of Intelligence to Size and Shape of Head 
TABLE IX. 
Gamhridge Graduates. Head Measurements. 
Grade of Ability 
Head Length 
Head Breadth 
Ceplialic Index 
Mean 
Standard 
Deviation 
Mean 
Standard 
Deviation 
Mean 
Standard 
Deviation 
Honours, 1st Class 
„ 2nd Class 
,, ord Class 
Poll Men 
195 -07 
194-51 
194-38 
193-33 
5- 890 
6- 026 
6-214 
6-113 
155-07 
153- 73 
154- 66 
153-95 
4-690 
4- 708 
5- 247 
4-845 
79-57 
79-22 
79-62 
79-71 
2- 995 
3- 129 
3-019 
2-827 
General Population 
194-00 
6-121 
154-21 
4-899 
79-58 
2-954 
The measurements are in mm. 
TABLE X. 
Hdiool Children. Head Measurements at Twelve. 
Grade of Ability 
Head Length 
Head Breadth 
Auricular Height 
Cephalic Index 
Boys 
Mean 
S. D. 
Mean 
S. D. 
Mean 
S. D. 
Mean 
S. D. 
Quick Intelligent ... 
Intelligent ... 
Slow Intelligent ... 
Slow 
Slow Dull 
Very Dull 
185-45 
184-70 
184-67 
183-93 
182-25 
180-19 
6-237 
6-288 
6-279 
6- 804 
7- 463 
7-048 
146-40 
145-39 
145-31 
144-45 
144-23 
143-36 
5-822 
5-814 
5-329 
5-835 
5- 810 
6- 023 
128-11 
127-30 
127-44 
127-76 
126-66 
124-84 
6-418 
6-786 
6-519 
6-619 
6-467 
6-924 
78-96 
78-92 
78-83 
78- 68 
79- 12 
79-48 
3-201 
3-360 
3-125 
3-087 
3-325 
3-145 
General Population 
184-44 
6-514 
145-23 
5-700 
127-43 
6-630 
78-88 
3-222 
Girls 
Quick Intelligent ... 
Intelligent ... 
Slow Intelligent ... 
Slow 
Slow Dull 
Very Dull 
180-83 
180-35 
179-89 
179-87 
178-61 
178-57 
5- 988 
6- 202 
6-305 
6-517 
5- 962 
6- 976 
140-97 
140-86 
140-85 
140-19 
138-72 
136-55 
6-069 
6-337 
6-621 
6-140 
6-802 
9-173 
124-44 
124-54 
124-52 
124-40 
122- 86 
123- 69 
6-800 
6-505 
6-777 
6-847 
6- 177 
7- 232 
78-50 
78-43 
78-57 
78-46 
77-74 
76-96 
3-754 
3-927 
3-861 
3-800 
3- 871 
4- 597 
General Population 
180-14 
6-260 
140-58 
6-505 
124-40 
6-699 
78-43 
3-885 
