This work does not profess to be so much a literal translation as a somewhat free version of Dr Bie's "Das Klavier." The author, writing as he does for a German public, naturally uses a more philosophic style than would be generally intelligible in England. Availing themselves, therefore, of Dr Bie's kind permission, the Editors, with a view to making the book more acceptable to English readers, have allowed themselves considerable liberty both in omission and in addition. For all portions of the text which are enclosed in square brackets they hold themselves responsible. The footnotes, except a few which are specially marked, have been added by Dr Naylor.