form, and may be termed 'oblong.' In this skull the extreme length is
to the extreme breadth as 100 to not more than 67, and the transverse
diameter of the human skull may fall below even this proportion.
People having such skulls were called by Retzius 'dolichocephalic.'

[footnote] *In no normal human skull does the breadth of the
brain-case exceed its length.

The most cursory glance at the side views of these two skulls will
suffice to prove that they differ, in another respect, to a very
striking extent. The profile of the face of the Calmuck is almost
vertical, the facial bones being thrown downwards and under the forepart
of the skull. The profile of the face of the Negro, on the other hand,
is singularly inclined, the front part of the jaws projecting far
forward beyond the level of the fore part of the skull. In the former
case the skull is said to be 'orthognathous' or straight-jawed; in the
latter, it is called 'prognathous,' a term which has been rendered,
with more force than elegance, by the Saxon equivalent,--'snouty.'

Various methods have been devised in order to express with some accuracy
the degree of prognathism or orthognathism of any given skull; most of
these methods being essentially modifications of that devised by Peter
Camper, in order to attain what he called the 'facial angle.'

But a little consideration will show that any 'facial angle' that has
been devised, can be competent to express the structural modifications
involved in prognathism and orthognathism, only in a rough and general
sort of way. For the lines, the intersection of which forms the facial
angle, are drawn through points of the skull, the position of each of
which is modified by a number of circumstances, so that the angle