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Classification of the Sci
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lectual, and those which are matters of nice control of the muscles chiefly.

The chief science ministrant to the Gamic Instinct is Pedagogy. The enormous Herbartian treatises on this subject sufficiently classify its departments. Special divisions relate to teaching deaf-mutes, teaching the blind, teaching animals, correspondence teaching, University Extension, Business Colleges, etc.

C. Sciences Ministrant to Specicultural Instincts.

The Grouping Instinct is the greatest of the instincts. It is the very atmosphere of life, pentrating into everything that man makes or does. The greatest of the Arts that subserve it are those of representing ideas by visible and by audible signs and of making visible signs to correspond to audible signs. Naturally, so important and peculiar a matter becomes the object of purely theoretical inquiries. But intermediate between the arts, which are entirely practical, and the theoretical sciences, there are practical sciences which inquire how these arts can best be developed and seek to guide them. For example, Alexander J. Ellis in addition to the most