PREFACE - Any new book, certainly one dealing with technical matters, ought to submit something akin to a "certificate of necessity." While "necessity" is highly subjective, and capable of many shades of meaning, the plain fact of this case is that no concise dictionary of metallurgical terms, adapted to American needs, has hitherto been available. And so, if the need but be granted, the author may be permitted to hope that this volume, in greater or lesser measure, fills the void. Not that perfection is expected-the ideal may not even be prayed for in this all-too-imperfect world. Indeed, I...