Causes, or "means," of modification, 301

---- C. Darwin says that Buffon has not entered on the, 104, &c.

---- C. Darwin gets us into a fog about, 345, &c.

Change, under changed circumstances, Mr. Patrick Matthew on, 318

Charity, the greatest of these is, 77

Church, a, like a second chamber, 400

---- the world better with than without, 400

---- should be like the fly-wheel of a steam engine, 104

_Circonstances_ (_see_ Conditions of Existence), Lamarck on, 268, 281

Circumstance, suiting power, a, Mr. Patrick Matthew on, 318-321

Classification, rather superficial appearances our best guide
to, 34, 35, 36, 198, 204

---- Buffon on, 108, 109, 141

Clear, an ineradicable tendency to make things, 92

Clifford, Professor, on "Design," 6, 7

Climbing plants, the movements of, Dr. Erasmus Darwin on, 209

Coherency, the persistency of ideas the best argument in support of
their legitimate connection, 23

Coleridge, on "Darwinising," 21

Common terms, our, involve the connection between memory and
heredity, 201, 205

---- descent, the "hidden bond" of Lamarck, as also of C. Darwin, 271

Comparative anatomy, Lamarck on, 266, &c.

Complex structures, the incipiency of, a difficulty in the way of the
natural selection view of evolution, 21, 22

Compromise, Buffon's, 92

Conditions of existence, the very essence of condition involves that
there shall be penalty in case of non-fulfilment, 352, 376, 377

---- and the winglessness of Madeira beetles, 373, &c.

---- according to C. Darwin, "include" and yet "are fully embraced by"
natural selection, 355

---- identical with "natural selection," 351-354

---- Etienne Geoffroy, and Lamarck on, 326, 327, 328

---- Buffon on the, 103;
difference between Buffon's and Lamarck's view of their action, 105

---- direct action of changed, Buffon on the, 145, 147, 160

---- Lamarck on, 105, 268, 270, 271, 275, 277, 278, 281, 291,
292, 294, 295, 298, 299, 300, &c.

Continuity in discontinuity, and _vice versa_, 47

Contracts of animals, Dr. E. Darwin on the, 205

Contrivance, does organism show signs of this? 2

Convenient, not only _sometimes_, but always, more, 365

Corkscrew for corks, and lungs for respiration, Prof. Clifford on, 7.
See also p. 58

---- we should have grown a, if drawing corks had been important
to us, 7

Creator, a, who is not an organism, unintelligible, 6, 11, 24

Criticising, difficulty of, withou