March, I916. ]
BOOK NOTICES.
435
Washington University, Fifty-ninth Annual Catalogue. St. Louis, I915. ( F r o m the University.) Western Australia Geological Survey: Bulletin No. 58, Pala~ontological Contributions to the Geology of Western Australia. Bulletin No. 62, Notes oll the Geology and Mining at Sanstone and Hancock's, East Murchison Goldfield. Bulletin No. 65, The Reputed Petroliferous Area of the Warren River District. Perth, I914 and I9I 5. ( F r o m the Survey.) Wisconsin Geological and Natural History Survey, Bulletin xlii, The Geography of the Fox-Winnebago Valley. Madison, I915. ( F r o m the Survey.)
BOOK NOTICES. THE METALLOGRAPHYAND HEAT-TREATI~IENTOF IRON AND STEEL, by Albert Sauveur, Professor of Metallurgy and Metallography in Harvard University and The Massachusetts Institute of Technology. Second edition. Cambridge, Sauveur and Boylston, I916. 504 pages, 438 illustrations, 8vo. Price, $6. This is a new edition, revised and enlarged, of Professor Sauveur's " Metallography of Iron and Steel," published in I912 , a comprehensive review of which appeared in the JOURNAL OF THE FRANKLIN INSTITUTE, February, I913. The author states that 50 pages of new matter and nearly lOO new illustrations have been added in this revision. Careful comparison of the first and second editions shows that practically the same arrangement of matter and illustrations has been retained, substituting the word " Chapter" for " Lesson" in each subdivision and transferring the instructions regarding " Manipulation and Apparatus " from the Appendix in the first edition to Chapters II and III in the new edition. For those who do not already possess the first edition this new edition will prove invaluable not only to students of metallurgy but also to practical workers in the field which it covers so fully. There has been an unexpectedly great enlargement of need for such a thoroughly up-to-date book in this country since the first edition appeared, shortly before the outbreak of the European war, for very many establishments have obtained large contracts for metallurgical products requiring most careful and accurate heat-treatment A new edition of this classic is therefore timely. ALEX. E. OUTERBRIDGE, JR. OF COLLOID-CHEMISTRY: T H E RECOGNITION OF COLLOIDS, T H E THEORY OF COLLOIDS, AND THEIR CHEMICO-PHYSICALPROPERTIES, by Wolfgang Ostwald. First English edition, translated from the third German edition by Martin H. Fischer, assisted by Ralph E. Osper and Louis Berman. Philadelphia, P. Blakiston's Son & Co., 1915. 266 pages, illustrations, 8vo. Price, $3. It is a question of literary taste whether the German word "Handbuch " may not be better rendered by the word " Manual," or even whether the simple title " Colloid-Chemistry" would not have been enough. However, the a
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