lar inspection the development of the new being in the Windsor
does, he saw each part appear successively, and taking the moment of
'appearance' for the moment of 'formation' he imagined 'epigenesis'."
(P. 165.)

On the contrary, says M. Flourens (p. 167),

"The new being is formed at a stroke ('tout d'un coup') as a whole,
instantaneously; it is not formed part by part, and at different times.
It is formed at once at the single 'individual' moment at which the
conjunction of the male and female elements takes place."

It will be observed that M. Flourens uses language which cannot be
mistaken. For him, the labours of von Baer, of Rathke, of Coste, and
their contemporaries and successors in Germany, France, and England, are
non-existent: and, as Darwin "imagina" natural selection, so Harvey
"imagina" that doctrine which gives him an even greater claim to
the veneration of posterity than his better known discovery of the
circulation of the blood.

Language such as that we have quoted is, in fact, so preposterous, so
utterly incompatible with anything but absolute ignorance of some of the
best established facts, that we should have passed it over in silence
had it not appeared to afford some clue to M. Flourens' unhesitating,
'a priori', repudiation of all forms of the doctrine of progressive
modification of living beings. He whose mind remains uninfluenced by an
acquaintance with the phenomena of development, must indeed lack one
of the chief motives towards the endeavour to trace a genetic relation
between the different existing forms of life. Those who are ignorant of
Geology, find no difficulty in believing that the world was made as it
is; and the shepherd, untutored in history, sees no reason to regard the
green mounds which indicate the site of a Roman camp, as aught but part
and parcel of the primeval hill-side. So M. Flourens, who believes that
embryos are formed "tout d'un coup," naturally finds no difficulty in
conceiving that species came into existence in the same way.

[Footnote 1: The Natural History Review', 1864.
1. UEBER DIE DARWIN'SCHE SCH PFUNGSTHEORIE; EIN VORTRAG, VON A. K
LLIKER. Leipzig, 1864.
2. EXAMINATION DU LIVRE DE M. DARWIN SUR L'ORIGINE DES ESPECES. PAR P.
FLOURENS. Paris, 1864.]

[Footnote 2: 'Die Radiolarien: eine Monographie', p. 231.]

[Footnote 3: Space will not allow us to give Professor Kolliker's
arguments in detail; our readers will find a full and accurate version
of t