Mutability of species commonly held to be incompatible with a
belief in design, 9, 10

Mystery-mongering, that Buffon wished to protest against, 81, 171

Mystification, scientific, and orthodoxy, Buffon on, 138

NAIVELY, as Mr. Darwin naively adds, "_sometimes_ equally
convenient," 354

Natural selection, the essence of the theory is that the variations
shall have been mainly accidental, 7

Natural selection, the unerring skill of, 9

---- Sir William Thomson and Sir John Herschel on, 10

---- Button, and, "by _some chance_ common enough with Nature," 122

---- spoken of as though synonymous with descent with
modification, 248, 285, 356

---- C. Darwin attributes the instincts of neuter insects to, 249

---- Mr. Patrick Matthew and, 323

---- like the secretion of a cuttle-fish, 332

---- G. H. Lewes's objection to C. Darwin's language concerning, 346

---- if this is declared to be a cause, the fact of variation
is declared to be the cause of variation, 347

---- declared by C. Darwin to be a means of variation, 347

---- treated as a cause, 348

---- G. H. Lewes on, 348, 349, 350

---- identity with "conditions of existence," 351-354

---- according to C. Darwin, "fully embraces" and yet "is included
in" conditions of existence, 355

---- a cloak for want of precision of thought, and of substantial
difference from Lamarck, 358

---- "some have even imagined that it induces variability;" and small
wonder, considering C. Darwin's language concerning it, 362

---- C. Darwin's reply to those who have objected to the term, 362-368

---- a cloak of difference from C. Darwin's predecessors, under which
there lurks a concealed identity of opinion as to main facts, 362, 363

---- "implies only the preservation of such variations as arise,"
&c., 363

---- admitted by C. Darwin to be a false term, 364

---- the complaint is that the expression has been retained when
an avowedly more accurate one is to hand, 365, 366

---- only another way of saying Nature, 368, 369

---- the dislike of it is increasing, 368, 369

---- Francis Darwin does not use the expression, 368, 369

---- daily and hourly scrutinizing throughout the world, &c., 369

---- practically repudiated by C. Darwin himself, 369

---- Professor Mivart declares it to be "simply nothing," 370

---- a "puerile hypothesis," 371

---- and not disuse, the true main cause of the winglessness of
Madeira beet