Excerpt from Outlines of the Comparative Physiology and Morphology of Animals
So many books have recently come out, and are still coming out, on zoology and biology that it seems necessary that I should say something of the reasons for this one.
Nearly all the books now coming out are devoted, and rightly so, to practical laboratory methods, and especially to the study of selected types. This method, first introduced by Rolleston and rendered popular by Huxley, was a reaction against the barrenness of the old text-book and lecture method. It was certainly timely and necessary; but there is danger that, like all reactions, it may have, and indeed has already, gone too far. Undoubtedly the teaching by types is indispensable in the early part of the course, in order to introduce the student into the true spirit and methods of science; but to continue it and "make it the main form of teaching is a serious mistake." There is serious danger that in the attempt to explore thoroughly a few small spots here and there in the field we lose sight of the general connection of all parts to one another and to the whole - that in the microscopic clearness but narrowness of our knowledge we lose that general view of the whole which alone gives significance to any knowledge.
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