ndprobleme der heutigen Pflanzenmorphologie," _Biol.
Centrbl._, xxv., pp. 65-83, 1905.

[542] This is also emphasised by Fleischmann in his critical study of
evolutionary morphology entitled _Die Descendenztheorie_, Leipzig,
1901.

[543] The same remark applies to the bulk of speculation as to the
factors of evolution, with the exception of the contributions made
to evolution theory by the palaeontologists by profession, such as
Cope.

[544] _Les Transformations du Monde animal_, Paris, 1907.

[545] "Malacology _versus_ Palaeoconchology," _Proc.
Malacological Soc._, viii., pp. 66-83, 1908.

[546] Particularly by E. Perrier, "La Tachygenese," _Ann.
Sci. nat._ (_Zool._) (8), xvi., 1903.

[547] _Monatsber. k. Akad. Wiss._, Berlin, pp. 474-504,
1866.

[548] _Geognost. u. Palaeont. Beitraege_, ii., Heft 2, pp.
181-256, 1869.

[549] _Abhand. k.k. Geol. Reichsanstalt_, vii., Wien,
1875.

[550] The case for polyphyletism is very strongly put by
G. Steinmann in his book, _Die geologischen Grundlagen
der Abstammungslehre_, Leipzig, 1908.

[551] The steps in this chronological variation were
termed by Waagen "mutations."

[552] _The Age of Mammals in Europe, Asia, and North
America_, New York, 1910.

[553] _Origin of Species_, 6th ed., Chap. IV.

INDEX

ACTINOZOAN THEORY of Vertebrate Descent, 299-300

Adaptation as Conservative Principle--
Cuvier, 39, 76

Adaptation, Ecological--
Von Baer, 123
H. Milne-Edwards, 199
Lamarck, 221, 222, 223, 224, 227
Treviranus, 225 f.n.
C. Darwin, 231-2, 235, 239
Haeckel, 248, 263
Gegenbaur, 263
V. O. Kowalevsky, 362
Osborn, 362-4

Adaptation, Ecological, and Classification--
Bronn, 203

Adaptation of Parts. _See_ "Correlation, Functional," and "Conditions of
Existence"

Adaptive Radiation (Osborn), 362-4

Agassiz, A., 288 f.n., 295
On Coelom, 296

Agassiz, L.--
Criticism of Vertebral Theory of Skull, 157
Membrane and Cartilage Bones, 164
Transcendentalism, 203
Classification, 203 f.n.
Three-fold Parallelism, 230, 255
Influence on Darwin, 238
Specific Distinctness of Embryos, 353

Albertus Magnus, 17

Alcmaeon, 1

Aldrovandus, 18

Allman, 209

Analogy. _See also_ Homology.
Aristotle, 8-10
Owen, 108
Haeckel, 251
Gegenbaur, 266
Lankester, 267

Anaxagoras, 14

Anaximander, 14