detail, although it would appear here that many of these consist of manu facturers' tests and standard methods might be used to equal advantage. The section on chemical reactions is rather cursory, but many of the reactions of the materials are noted. The section on polymerization is, in most cases, too brief to be of any particular value, and, in some cases, antiquated methods of procedure are described. It is noticeable that the references are predominantly early references, and few references since 1945 are noted. Undoubtedly, this collection of pam phlets will be of service in obtaining in formation on the properties and be havior of the monomers. It is felt that more rigid editing and elimination of obsolete material would have strength ened their utility. P. O. POWERS
Research on Industrial Hasards
Directory
Business Dictionaries Ltd., St. Dunetan's House, 133-137 Fetter Lane, Lon don EC4, England, announces the is suance of "British Industry Classified by Trades" for 1948, which forma a sec tion of "Sell's Directory of Registered Telegraphic Addresses." This volume, which has been published annually for 63 years, contains an alphabetical list VOLUME
2 7, N O . 3 3 » .
Steel Making An attractive, 101-page, well illustrated booklet gotten out by U. S. Steel Corp., is called "Steel Making in America." It was published primarily for school stu dents in response to thousands of re quests received from pupils for informa tion about steel making. It is expected that it will also prove helpful to any laymen who wish to further their knowl edge of the manufacture of steel. In quiries for information about the book should be addressed to J. Carlisle MacDonald, Assistant to Chairman, U. S. Steel Corp., 71 Broadway, New York 6, Ν. Υ.
Mellon Research
"Report of Research and Technologic Work on Explosives, Explosions, and Flames, Fiscal Years 1947 and 1948," Bureau of Mines Report of Investiga tions 4502 sets forth results of studies on the explosibility of ammonium nitrate fertilizer, the hazards of industrial gases, vapors, and dusts, and improved methods of rock dusting to prevent the spread of coal dust explosions. Following these studies, eight new explosives have been added to the approved list, making a total of 191 explosives and 9 blasting devices which may be used in coal mines. Investigation of the Texas City, Tex., explosion reflected that while it is diffi cult to detonate ammonium nitrate by ordinary impact or friction, under en closed conditions it can be exploded by heat alone. Explosion hazards of more than 175 dust samples were determined, including bituminous coal and lignite dust, graph ite, insecticides, soap powders, peni cillin, wood flour, corn starch, wheat, sulfur, cork, and plastics. Information is also set forth on the explosion hazards of perchloric acid. Free copies of the report are available from the Bureau of Mines, Publications Section, 4800 Forbes Street, Pittsburgh 13, Pa. Requests must specify the full title and the report number as set forth above.
British Industry
of firms, another of telegraphic addresses, and a classified list of the chief business concerns. There are also South Ameri can, Scandinavian, and Portuguese lists, as well as lists for Australia and New Zealand. Price of directory, $25.
"New Knowledge Through Scientific Research in Mellon Institute—1948-49" which is the full thirty-sixth annual report of the director, has been published as an attractive, 40-page booklet, well illustrated. Gratis on request.
π
AfeoA BooJu MeicUlusuftj, Burkhardt:
Mechanisch-
technologische Eigenschaften der reinen Metalle. $20.00 Raub: Edelmetdlle und ihre Legierungen.
$8.25
W e i b k e : Thermochemie der Legierungen.
$10.00
64 additional titles on metallurgy are listed in our CATALOG No. 7
J. W . EDWARDS A n n Arbor
New B o o k s
Michigan
Ώ
Audel's Pomps, Hydraulics, Air Com pressors: A Practical Guide Covering Theory, Construction and Operation of Modern Pumps, Hydraulic Machin ery, Air Compressors, and Blowers. FRANK D . GRAHAM.
itt
HAIL THIS REQUEST η
Theodore Audel
& Co., 49 West 23rd St., New York 10, Ν. Υ. $4.00. Chemistry and You.
HOPKINS-SMITH-
McGiLii-BRADBUBY. ix + 772 pages. Lyons and Carnahan, 225 South Main St., Wilkee-Barre, Pa. $2.40. The First Scientific Analysis of Pe troleum· Facsimile Reprinting of Re port on Rock Oil, or Petroleum, in
$
Venango Co., Pa., by BENJAMIN SILLI-
MAN, published in 1855. 24 pages. Paul H. Giddens, c/o Allegheny Col lege, Meadville, Pa. Paper, $125. Freedom from Want: A Surrey of the Possibilities of Meeting the World's Food Needs. Ε. Ε. DeTurk, editor. 77 pages {Chronica Botanica, Yol. II, No. 4, pp. 207-284). The Chronica Botanica Co., Waltham, Mass. $2.00. Geology for Engineers. JOSEPH M. TREFETHEN.
631 pages. D . Van Nos-
Chemistry.
L. E. ABNOW and H. C.
trand Co., Inc., 250 Fourth Ave., New York 10, Ν. Υ. $5.75. Introduction to Organic and Biological REITZ. 3rd Edition. 595 pages. C. V. Mosby Co., 3523 Pine St., St. Louis, Mo. $4.00. Materials of Construction. A. G. H. DIETZ. 356 pages. D . Van Nostrand Co., Inc., 250 Fourth Ave., New York 10, Ν. Υ. $4.50. Synthetic Perfumes. Their Chemistry and Preparation.
T. F. WEST, et al.
388 pages. Longmans, Green & Co., 55 Fifth Ave., New York 3, Ν. Υ. $17.50.
AUGUST
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