The method illustrated above by which animals learn to deal with forces in the midst of which they live has a much wider range of application in human existence than is generally supposed. Man's fundamental mode of learning is also the unreflective, experimental, one in which frequent blind attempts and chance successes slowly lead to the elimination of ineffective movements. Would you convince yourself of the vastly exaggerated rôle ascribed to abstract ideas and to logical processes in ordinary human behaviour, inquire how 'power' is conceived of by those who use it. What is in the mind of the stoker when he thinks of the power of coal? What in the mind of the gambler when he tries to coerce fate? What in the mind of the necromancer when he summons the shades of spirits? Nothing definite beyond a knowledge of what is to be done in order to secure the desired results and the anticipation of these results them selves. The stoker thinks of what he sees and feels: the coal, in burning, gives heat; the heat makes the water boil; the steam pushes the piston-rod, and so forth. Each one of the successive links in the chain is vaguely thought of by him as striving to bring about the following one. That is how he understands the coal-power. And what does the ordinary person know, for instance, about electricity? Simply what is to be done in order to start the dynamo, light the lamp, switch the current, and what the effect will be in each case, nothing more. The superstitious person, whether belonging to a primitive tribe or to the Anglo-Saxon civilisation of the twentieth century, understands in no other than this practical way the forces he deals with. I remember the delight shown by an elderly lady when a brood of swallows fell down our sitting-room chimney. 'It will bring luck to the household,' said she. I did my best, patiently and in several ways, to ascertain the sort of notion the lady had regarding the nature of the power that was to bring about the fortunate events predicted, and also to discover her idea of the connection existing between the fall of the swallows and the exertion of the 'power' in our behalf. I had to come to the conclusion that there was no idea whatsoever in her mind beyond those expressed by 'swallows-down-the-chimney' and 'happy-events-coming.' These two ideas were in her mind directly associated. When I declared my inability to see the causal connection between the two, she complained of my abnormal critical sense! Nothing more than the immediate association of an antecedent with its consequent need be looked for in the mind of most civilised, superstitious persons, and, of course, nothing more in the mind of a savage. That is sufficient for practical purposes.