tivation of the memory is a far different thing from “trick memory,” or feats of mental legerdemain if the term is permissible.
Kay says: “That the memory is capable of indefinite improvement, there can be no manner of doubt; but with regard to the means by which this improvement is to be effected mankind are still greatly in ignorance.” Dr. Noah Porter says: “The natural as opposed to the artificial memory depends on the relations of sense and the relations of thought,—the spontaneous memory of the eye and the ear availing itself of the obvious conjunctions of objects which are furnished by space and time, and the rational memory of those higher combinations which the rational faculties superinduce upon those lower. The artificial memory proposes to substitute for the natural and necessary relations under which all objects must present and arrange themselves, an entirely new set of relations that are purely arbitrary and mechanical, which excite little or no other interest than that they are to aid us in remembering. It follows that if the mind tasks itself to the special effort of considering objects under these artificial re-
