The first edition of this book, which is an adaptation and not a translation of Dr. Frenkel's book, appeared in 1902. In the second edition, revised by Dr. Freyberger, "redundaces" have been removed, a few unnecessary illustrations taken out, and the remainder partly regrouped. "Notes on the medical treatment that is often required during Frenkel treatment" are added by Dr. Freyberger.
A number of changes in the make-up of this edition reflect credit on the former one. In size it conforms more readily to standard volumes; the illustrations are not so clear. The legends of some of the diagrams which were left untranslated in the former edition are rendered into English. Some of the measurements of diagrams are omitted, and in some errors appear, as 9 inches for 63 ct. Certain important statements marked by italics in the former edition are left unemphasized.
The text, as in the former edition,