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Classification of the Sci.
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and there are instincts that do not obviously and decisively contribute to either end, such as that of Play and that of Collecting. In view of these facts, it seems best to begin by drawing up a list of instincts, that is, a list of the kinds of things and experiences that naturally seem good to men irrespective of any ulterior reasons, and then to adopt as our first group of sciences all those scientific inquiries which are directed to finding how to gain these enjoyments best. All this will be, at least, painfully superficial work. This list of instincts with which I propose to set out is a work of classification that properly demands a year of study for every hour that I have been able to devote to it; and when this list has been got it will be found that no little perplexity attends the next step, that of saying what are the sciences which minister to those instincts.

However, to break the ice, let us say that man's instincts, so far as we have to consider them, are these twelve: the Health-Instinct, the Food-Instinct, the Clothes-