E. Schuster 
47 
The average stature is 17516 mm. for the 18 year old group and goes up to 
1 767*2 mm. for the 19 year old men, while 1778"6 is recorded for those of 21 years 
of age. The latter figure is probably an accidentally high one since the succeeding 
years show lower averages. The numbers are really too small to give a satisfactory 
curve of growth. 
The mean ratio of length of leg to stature is fairly constant through all the 
ages considered, the lowest average recorded being 47 01 and the highest 47 - 46. 
The mean ratio of thigh to leg is even more constant, ranging between 4644 and 
46-65. 
The correlation between leg ratio in stature is well marked, its average value 
being "44, which means that for any particular age group increase in stature is due 
to a great extent to increased length of leg. On the other hand it must be pointed 
out that although the mean stature appears to increase with the age the mean 
length of leg does not, thus it may be argued that growth after the age of 18 
concerns the body rather than the legs. 
As thigh ratio is sensibly correlated with leg ratio it would appear that people 
with disproportionately long legs also are apt to have disproportionately long 
thighs. 
(4) Head Measurements. 
(1) Greatest Length. Taken from the most prominent point of the glabella or 
prominence in the mid line between the two eyebrows to the most distant point in 
the middle line on the back of the head, known as the occipital point. 
(2) Greatest Breadth. Measured wherever it can be found above the plane 
of the ear-holes. The calipers must be held in such a way that the two points lie 
in the same vertical and horizontal planes. 
(3) Auricular Height. Two points are placed firmly in the ear-holes, and a 
third point lying in the same vertical plane is brought down on to the top of the 
head. The distance between this point and the line joining the other two is read 
off by means of a scale. 
(4) Maximum Circumference. Measured by passing a steel tape over the 
glabella in front and the occipital point behind. 
(5) Sagittal Arc. Measured by passing the tape from the glabella in front, 
over the top of the head in the middle line to the inion behind. The inion is a 
bony projection, developed to very varying extent in different people, wdiich lies 
in the middle line, just above the area of the skull, to which the fleshy muscles at 
the back of the neck are attached. 
(6) Transverse Arc. Measured by passing the tape over the top of the head 
in a vertical plane from one preauricular point to the other. The preauricular 
point is the point immediately in front of the tragus, or little projection of ear 
which lies in front of the ear-hole. 
