This useful book contains a wealth of information on the engraving of metals, and will prove to be a valuable addition to the bookshelf of anyone with an interest in the subject. Preface: ''This Handbook contains, in a form convenient for everyday use, a comprehensive digest of the information on Engraving Metals by incision and corrosion scattered over nearly twenty thousand columns - one of the weekly journals it is my fortune to edit - and supplies concise instruction on the general principles of the subjects of which it treats...''