This book is a revision of my Appendix to Bennett's Latin Grammar, published in 1895. That book was originally pre pared as a series of lectures to advanced students on subjects notcovered in any Latin Grammar published in America. The title Appendix, however, was misleading and gave to many a wrong impression of the purpose and scope of the book, which was in reality written long in advance of the publication of my Laiz'n Grammar and entirely without reference to that work. The new title is more appropriate to the views discussed and the facts brought out; hence the change.