_Shape of the shaft._—A number of years ago the writer[51] called
attention to the fact that in transverse sections at the middle the
long-bones show each a considerable variety in the shape of the shaft,
and that these varieties can be reduced for each bone to several
distinct types of both functional and racial significance. As to
the humeri, the most frequent shapes are the p. c., plano-convex
or infantile form; type 1, or ordinary prismatic; type 2, lateral
prismatic; and type 4, in which the anterior border is broadened out to
a distinct fourth surface.
[51] Hrdlička, Typical Forms of Shaft of Long-Bones, _Proceedings of
the Association of American Anatomists_, 14th Sess., Dec. 1900, pp.
55-60, figs. 1-2, Washington, 1901.
Among the Munsee the occurrence of shapes was as follows: