The Descent of Man

pecially, as Canestrini has observed, in those
exhumed from the Drift, and belonging to the
brachycephalic type. Here again he comes to
the same conclusion as in the analogous case of
the malar bones. In this, and other instances
presently to be given, the cause of ancient races
approaching the lower animals in certain characters
more frequently than do the modern
races, appears to be, that the latter stand at a
somewhat greater distance in the long line of
descent from their early semi-human progenitors.
Various other anomalies in man, more or less
analogous to the foregoing, have been advanced
by different authors, as cases of reversion;
but these seem not a little doubtful, for we
have to descend extremely low in the mammalian
series, before we find such structures normally
present. (41. A whole series of cases is
given by Isidore Geoffroy St.-Hilaire, 'Hist. des
Anomalies,' tom, iii, p. 437. A reviewer ('Jour-