criticism and controversy, but Lucka has stated his case and drawn his
conclusions with such admirable precision and logic, that his work has
aroused admiration and appreciation even in the ranks of his opponents.

Love is a theme which at all times and in all countries has been of
primary interest to men and women, and therefore this book, which throws
an illuminating ray of light in many a dark place still wrapped in
mystery and silence, not only impresses the psychologist, but also
fascinates the general reader with its wealth of interesting detail and
charm of expression.

The three vitally important points which the author develops are as
follows:--

Love is not a primary instinct, but has been gradually evolved in
historical time.

Ernst Haeckel's biogenetic law is expanded in a psychogenetic law.

Only man's emotions have undergone evolution, and therefore have a
history, while those of woman have experienced no change.

Lucka's book will probably not please the advanced feminists, but the
delicate, although perhaps involuntary homage to her sex which is
implied in his theories ought to rouse a feeling of gratification in the
heart of every right-feeling woman. The very limitations and
restrictions which he lays upon her raise and glorify her. For while man
has been the "Odysseus wandering through heaven and hell, passing from
the bestial to the divine to return again and become human, woman has
always been the same, unchangeable and without problems. That which he