[562] Philosophie Zoölogique, 3me partie, chap. v., 'de l'Instinct.'
[563] It should be said that Mr. Spencer's most formal utterance about instinct is in his Principles of Psychology, in the chapter under that name. Dr. Romanes has reformulated and criticised the doctrine of this chapter in his Mental Evolution in Animals, chapter xvii. I must confess my inability to state its vagueness in intelligible terms. It treats instincts as a further development of reflex actions, and as forerunners of intelligence,—which is probably true of many. But when it ascribes their formation to the mere 'multiplication of experiences,' which, at first simple, mould the nervous system to 'correspond to outer relations' by simple reflex actions, and, afterwards complex, make it 'correspond' by 'compound reflex actions,' it becomes too mysterious to follow without more of a key than is given. The whole thing becomes perfectly simple if we suppose the reflex actions to be accidental inborn idiosyncrasies preserved.
[564] This account of acquisitiveness differs from our own. Without denying the associationist account to be a true description of a great deal of our proprietary feeling, we admitted in addition an entirely primitive form of desire. (See above, [p. 420] ff.) The reader must decide as to the plausibilities of the case. Certainly appearances are in favor of there being in us some cupidities quite disconnected with the ulterior uses of the things appropriated. The source of their fascination lies in their appeal to our æsthetic sense, and we wish thereupon simply to own them. Glittering, hard, metallic, odd, pretty things; curious things especially; natural objects that look as if they were artificial, or that mimic other objects,—these form a class of things which human beings snatch at as magpies snatch rags. They simply fascinate us. What house does not contain some drawer or cupboard full of senseless odds and ends of this sort, with which nobody knows what to do, but which a blind instinct saves from the ash-barrel? Witness people returning from a walk on the sea-shore or in the woods, each carrying some lusus naturæ in the shape of stone or shell, or strip of bark or odd-shaped fungus, which litter the house and grow daily more unsightly, until at last reason triumphs over blind propensity and sweeps them away.
[565] Review of Bain in H. Spencer: Illustrations of Universal Progress (New York, 1864), pp. 311, 315.
[566] Ribot: De l'Herédité, 2me éd. p. 26.
[567] Quoted (without reference) in Spencer's Biology, vol. i. p. 247.
[568] Expression of Emotions (N. Y.), p. 287.
[569] 'Adaptive' changes are those produced by the direct effect of outward conditions on an organ or organism. Sunburned complexion, horny hands, muscular toughness, are illustrations.
[570] For these and other facts cf. Th. Ribot: De l'Hérédité; W. B. Carpenter: Contemporary Review, vol. 21, p. 295, 779, 867; H. Spencer: Princ. of Biol. pt. ii. ch. v, viii, ix, x; pt. iii. ch. xi, xii; C. Darwin: Animals and Plants under Domestication, ch. xii, xiii. xiv; Sam'l Butler: Life and Habit; T. A. Knight: Philos. Trans. 1837; E. Dupuy: Popular Science Monthly, vol. xi. p. 332; F. Papillon; Nature and Life, p. 330; Crothers, in Pop. Sci. M., Jan. (or Feb.) 1889.
[571] [Because, being exhibited by neuter insects, the effects of mere practice cannot accumulate from one generation to another.—W. J.]