The angle between the body and the ramus of the lower jaw is known to
differ with the age and sex as well as individually. Not seldom it
differs also, and that sometimes quite appreciably, on the two sides.
Racial differences are as yet uncertain.
The angle, especially in some specimens, is not easy to measure, and
the position of the jaw may make a difference of several degrees.
Numerous trials have shown that the proper way is to measure the angle
on the two sides separately, and to so place the jaw in each case that
there is no interference with the measurement by either the posterior
or the anterior enlarged end of the condyle.
Leaving out jaws in which extensive loss of teeth has in all
probability resulted in changes in the angle, the western Eskimo
material gives the following data: