idiots or general paralytics with us. Martin assures me that
in the Malay peninsula he has found as much difference between the men
and women as in Europeans.

According to Martin, men living at the present day may be divided into
three classes according to their cranial capacity:

MEN. WOMEN.
Aristencephalous (large brains) over 1450 gr. over 1300 gr.
Euencephalous (medium brains) 1300 to 1450. 1150 to 1300.
Oligencephalous (small brains) under 1300. under 1150.

AVERAGE CRANIAL CAPACITY IN DIFFERENT RACES

Men Women Difference
{Badois { 48 Craniums m. } 1513 1330 183
{ { 26 " f. }
Civilized {
{Bavarian {100 " m. } 1503 1335 168 (11.2 %)
{ {100 " f. }

{Malay { 26 " m. } 1414 1223 191
{ { 2 " f. }
Semi-Civilized {
{Aino { 87 " m. } 1462 1308 154
{ { 64 " f. }

Lowest Race { 22 " m. } 1277 1139 138 (10.8%)
Weddas { 10 " m. }

CHAPTER VII

SEXUAL EVOLUTION

The evolution of every living being is twofold. We must distinguish:
(1) its _ontogeny_, or the entire cycle of development of the
individual from its conception till natural death at an advanced age;
(2) its _phylogeny_, or the series of organic forms through which its
ancestors passed, by successive transformations, from the primitive
cells of the oldest and most obscure geological periods, up to its
present organization.

In its chief outlines ontogeny is determined by phylogeny by means of
the laws of heredity, even when it is only an abridged recapitulation.

Regarded from this point of view the sexual life of man is also based
on phylogenetic conditions, determined by his ancestral lineage.
Moreover, it presents an individual or ontogenetic evolution during
the life of each person, which in its principal traits is
predetermined in the germ, by the phylogenetic or hereditary energies
of the species. The phenomena of the hereditary mneme show clearly how
ontogeny is the result of engraphia combined with selection, in the
series of ancestors. We have already mentioned these points on several
occasions, but must now review the whole