them.

We have already adverted to Haeckel's acceptance and development of
Hering's ideas in his "Perigenese der Plastidule." Oscar Hertwig has
been a consistent Lamarckian, like Yves Delage of the Sorbonne, and
these occupy pre-eminent positions not only as observers, but as
discriminating theorists and historians of the recent progress of
biology. We may also cite as a Lamarckian--of a sort--Felix Le
Dantec, the leader of the chemico-physical school of the present day.

But we must seek elsewhere for special attention to the points which
Butler regarded as the essentials of "Life and Habit." In 1893 Henry
P. Orr, Professor of Biology in the University of Louisiana,
published a little book entitled "A Theory of Heredity." Herein he
insists on the nervous control of the whole body, and on the
transmission to the reproductive cells of such stimuli, received by
the body, as will guide them on their path until they shall have
acquired adequate experience of their own in the new body they have
formed. I have found the name of neither Butler nor Hering, but the
treatment is essentially on their lines, and is both clear and
interesting.

In 1896 I wrote an essay on "The Fundamental Principles of Heredity,"
primarily directed to the man in the street. This, after being held
over for more than a year by one leading review, was "declined with
regret," and again after some weeks met the same fate from another
editor. It appeared in the pages of "Natural Science" for October,
1897, and in the "Biologisches Centralblatt" for the same year. I
reproduce its closing paragraph:-