When this more definitely scientific direction is taken by a child’s questioning we may observe that the ambitious ‘why?’ begins to play a second _rôle_, the first being now taken by the more modest ‘how?’ The germ of this kind of inquiry may be present in some of the early questioning about growth. “How,” asked our little zoologist, “does plants grow when we plant them, and how does boys grow from babies to big boys like me? Has I grown now whilst I was eating my supper? See!” and he stood up to make the most of his stature. Clearer evidence of a directing of inquiry into the processes of things appears in the fifth and sixth years. A little girl of four years seven months among other questionings wanted to know what makes the trains move, and how we move our eyes. The incessant inquiries of the boy Clark Maxwell into the ‘go’ of this thing or the ‘particular go’ of that illustrate in a clearer manner the early tendency to direct questioning to the more manageable problems to which science confines itself. These different lines of questioning are apt to run on concurrently from the end of the third year, a fit of eager curiosity about animals or other natural objects giving place to a fit of theological inquiry, this again being dropped for an equally eager inquiry into the making of clocks, railway engines, and so on. Yet through these alternating bouts of questioning we can distinguish something like a law of intellectual progress. Questioning as the most direct expression of a child’s curiosity follows the development of his groups of ideas and of the interests which help to construct these. Thus I think it a general rule that questioning about the make or mechanism of things follows questioning about animal ways just because the zoological interest (in a very crude form of course) precedes the mechanical. The scope of this early questioning will, moreover, expand with intellectual capacity, and more particularly the capability of forming the more abstruse kind of childish idea. Thus inquiries into absolute beginnings, into the origin of the world and of God himself, indicate the presence of a larger intellectual grasp of time-relations and of the processes of becoming.