While issuing Parts I, II and III separately, for the use of students, it is thought that most persons, particularly practical metallurgists, will prefer to have the whole work in one volume. The writer has endeavored to correct all the mistakes which crept into former editions, and to add such new and useful physical and chemical data as have appeared to date. Some new features are the tables of thermochemical constants (which will assist in predicting tmdetermined heats of formation), the estimation of many latent heats of fusion and vaporization of the elements (which data can be used pro tern, as first approximations), and the evaluation of vapor tension formulas for the dements in both liquid and solid states (likewise to be used as first approximations). My thanks are due to Mr. Leonard Buck and Mr. Y. Takikawa, students in metallurgy, for considerable assistance given in calculating and completing the new tabular data. The author is grateful to many friends whose kindly criticisms have pointed out mistakes or suggested improvements. He appreciates the careful translations which have been made into Italian by Sr. Remo Catani, into Russian by Engineer Koshkin, into German by Prof. Neuman and Engineer Brodal, and regrets that the breaking out of the great war has interrupted translations already begtm into French and Spanish. These international recognitions are simply proofs that the day of Quantitative Metallurgy is dawning all over the world, and that the application of Metallurgical Calculations is the path to Metallurgical Efficiency. Joseph W. Richards. Lehigh UN iVER smr, January 15, 1918.
(Typographical errors above are due to OCR software and don't occur in the book.)
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