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ON ANTHROPOMETRIC INVESTIGATION IN THE BRITISH ISLES 201 
3. Maximum inter-zygomatic breadth.h—The maximum diameter 
between corresponding points on the opposite zygomatic arches. The 
pressure used is to be as much as can be comfortably borne by the 
person under examination. 
The zygomatic arch of the skull can be felt stretching forwards from 
a point in front of the tragus or prominence in front of the earhole to 
the most prominent part of the cheek. 
4. Maximum inter-malar lLreadth.—The maximum diameter between 
the cheek-bones just below the angles or points of junction between the 
outer and lower parts of the rims of the orbital openings. A contact 
measurement. 
5. Haternal orbital breadth—Maximuim diameter between the outer 
margins of the orbits. A contact measurement. 
6. External ocular breadth.—The diameter between the two eaternal 
cantht, or outer angles of junction, of the eyelids. A contact measure- 
ment. 
7. Internal ocular breadth.—The diameter between the two internal 
canthi, or inner angles of junction of the eyelids. A contact measure- 
ment. 
N.B.—The last two measurements are to be taken when the eyes 
are open. 
8. Gonial breadth.—The diameter between the extreme otter points 
of the angles of the lower jaw. This measurement is to be taken with 
the maximum comfortable pressure. 
Tape Measurement. 
9. Orbiio-nasal.—From the same points as No. 5, the tape passing 
lightly over the nasion. 
Radii. 
All these are to be measured with contact only. 
10. Upper nasal.—From the earholes to the nasion. 
11. Afid nasal.—From the earholes to the lower border of the nasal 
bones in the middle line. 
12. Lower nasal.—From the earholes to the point of the nose. 
13. Alveolar.—From the earholes to the margin of the gum between 
the two upper central incisor teeth. 
14, Mental.—From the earholes to the point of the chin, 
C. Noss. 
Calliper Measurements. 
All these are to be measured with contact only. 
1. Nasal height.—From the nasion to the swhnasal point, or, angle 
between the septum of the nose (i.e. the partition between the nostrils) 
and the upper lip. 
2. Nasal depth—From the subnasal point to the most projecting 
point on the tip of the nose. 
3. Nasal length—From the nasion to the point of the nose. 
