f disease.

Mention should also be made of the essays and works of H. Driesch,[266]
De Varigny,[267] Danilewsky,[268] Verworn,[269] Davenport,[270]
Gadow,[271] and others.

In his address on "Neodarwinism and Neolamarckism," Mr. Lester F. Ward,
the palaeobotanist, says:

"I shall be obliged to confine myself almost exclusively to the one
great mind, who far more than all others combined paved the way for
the new science of biology to be founded by Darwin, namely,
Lamarck." After showing that Lamarck established the functional, or
what we would call the dynamic factors, he goes on to say that
"Lamarck, although he clearly grasped the law of competition, or the
struggle for existence, the law of adaptation, or the correspondence
of the organism to the changing environment, the transmutation of
species, and the genealogical descent of all organic beings, the
more complex from the more simple; he nevertheless failed to
conceive the selective principle as formulated by Darwin and
Wallace, which so admirably complemented these great laws."[272]

As is well known, Huxley was, if we understand his expressions aright,
not fully convinced of the entire adequacy of natural selection.

"There is no fault to be found with Mr. Darwin's method, then; but
it is another question whether he has fulfilled all the conditions
imposed by that method. Is it satisfactorily proved, in fact, that
species may be originated by selection? that there is such a thing
as natural selection? that none of the phenomena exhibited by
species are inconsistent with the origin of species in this way?

* * * * *

"After much consideration, with assuredly no bias against
Mr. Darwin's views, it is our clear conviction that, as the evidence
stands, it is not absolutely proven that a group of animals, having
all the characters exhibited by species in nature, has ever been
originated by selection, whether artificial or natural. Groups
having the morphological character of species, distinct and
permanent races, in fact, have been so produced over and over again;
but there is no positive evidence, at present, that any group of
animals has, by variation and selective breeding, given rise to
another group which was even in the least degree infertile with the
first. Mr. Darwin is perfectly aware of this weak point, and brings
forward a multitude of ingenious and important