PREFACE TO FIRST AND SECOND EDITIONS. xi Bicknell's " Handbook for Chemical and Metallurgical Practice.'' It is not intended that this preface shall convey a complete statement concerning the importance of all the subjects treated. In order to obtain further conception of the important subjects discussed in the various parts of the work, the reader is kindly referred to a close study of the table of contents. THOS. D. WEST. SHARPSVILLE, PA., Jan. 5, 1897.niiiv and desired ends in making unxturrs are :«est aelrii-'/i-d. It also defines, for praetieal applii-ai i»»n in liie varion:, specialties, the affinity whieh o!ie ehrjniea! |»rop».-rty or metalloid has for another in ehan^L"!:^ file rliara^ter <*r g-rade of iron, atid diseloses yaluablt- information t.n thtfc seit*nee of mixing and nielti::;1, ea--! •!'»•::.