PREFACE. THE publication of a work upon a subject so interesting and so important as Menlory, in its connection with Music and Musical Performance, and about which, as far as the author has been able to discover, absolutely no literature exists, seems to call for no apology. But, because it is the first attempt to deal with this subject, because the territory which the author has endeavoured to map out was largely an unexplored one, in the survey of which he has been obliged to make his own high roads, and erect his own sign posts, he Therefore wishes to claim the indulgence of his reader, if, in the investigation which he now presumes to offer to those interested in musical education, his foot has slipped, and he has taken, not perhaps one, but many wrong turnings. The purpose of this work is chiefly twofold. Pint, it is an inquiry into the various forms of memory employed in piano playing, and the presentation of a theory with regard to the relative extent of the employment of the...