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HOT FORGED from solid, rectangular steel bars, de signed and produced for dependable, long-life service under the severest piping cooditiodsl A TYPE FOR EVERY USE! fOR All PRESSURIS! FOR All TiMPERAIURES I fUU STAINLESS ft FUlt AllOY STEEL UNIONS With screwed or locket weld ends. JOOO-lb. and flOOO-Ib. irv{<. WRIT* rot CATALOG IF ibowlng the complete Cetowlsso Floe of Perfect tool prodeets CATAWISSA VALVE ft FITTINGS COMPANY 204 MILL ST. CATAWISSA. PA. More BOOKSHELF S*flM oa pee* lit Titanium, pre-atreaaed and air-entrained concrete and a new treatment of numerous plastics. The book uses the nomenclature (or fatigue of metals, recommended by the ASTM. Cas Tuwhnz Analysis and Pbacticr. (1955). By B U Jennings, Professor and Chairman, Department of Mechanical Engingering, and IP L Rogers, Assistant Pro fessor of Mechanical Engineering, The Technological Institute, Northwestern Uni versity. 0x9K, cloth, 487 pp, ilhist, tablet. $8J0. McGraw-Hill Book Co, Inc, 330 IPeat 42nd Street, New York 36, N. Y. The eutbors address this book to those who have some knowledge o( basic thermo dynamics end mechanics. Each component of the gsa turbine Is analyzed from both energy and atresa standpoints. A table of air properties Included as an integral pert of the book simplifies the solution of prob lems. Various lurblno and compressor de sign types ste discussed end analysed. . Brief review* are given of applications for aircraft, marine, locomotive, power genera tion and industrial purposes. Close attention is given fuel*, combustion and combustion chambers lor gas turbine plenis- A chapter en vibration and balanc ing and another on atresaes in plant elemenu demonstrate practical design prob lems that most be solved. The book closes with e chapter on materials and metallurgy for the gas turbine. Casoynamik (Cas Dynamics). (1959). By Dr K Ottatisch, 7st9%, cloth, 4S6 pp, 300 Ulus, tablet, calculating charts. tlBAO. Springer-Verlag, Molkerbastel 5, IPien l, Austria. An advanced teat In fluid dynamics deal ing with the thermodynamic* and kine matic* ef fluid flow. This book employs partial differentials and multiple integrals In discussing the subject Treatment ap pear* wholly ihooreiica! with little de sign data provided. Includes Information on testing methods used In research In vestigations. Written wholly in German, OPPORTUNITIES IN ELECTRICAL Encinccjmnc. (/95J). By S P Shackleton, Belt Telephone Laboratories. 0x5%, paper, 128 pp. ft. Vocatlonel Guidance Manuals, Ine, 45 IP 45th Street, New York 36, N. Y. A well-written book directed to young people who contemplate entering the elec trical engineering profession, The author esplore* all aspects of the profession which e youngster should consider before embark ing upon an engineering educational course of study. He describes the engineering pro fession generally and then gives detailed ex planations of the electrical specialties. Subjecu covered include: education, licensing, gelling started, advancement, op portunities for employment, related fields and orgonlulton of the Held. Any engineer who wishes to counsel high school sludenu on the nature ol. electrical engineering should have a copy of this book in Ms S|- li i'J t til d"J*h ... . y.ir. -^y ' 1 * i '; , '-XS ... /'/ l'V*' A-- a|!; i Here's powerful evidence of the benefits offered by... NONPAREIL TRAOt MARK Turbine Oil Since 1940, the Indianapolis Power and Light Com pany has pul Nonpareil Turbine Oil Into one new turbine ofter another. Today, this rapidly growing company has eight big turbines--with 303,000 KW capability--operating on this unique lubricant. During the 13 years it has been in use, Nonpareil has provided convincing ovldonca of Its ability to eliminate oil replacements and oil-system cleaning. None of the original fills of Nonpareil have needed . to be reploccd. Neutralization numbers have stayed below 0.07 mg. KOH/gm. Oil systems have remained entirely clear. Ttie lubricant and maintenance savings realized by . this utility are Just the beginning. Trouble-free lubri cation and consequent savings are assured for the life of the eight turbines in normal operation. This is based on the written guarantee, given with each fill of Nonpareil, that this outstanding lubrieont will last as long as the turbine, and that its neutralization numbor will stay below 0.15 mg. KOH/gm. The Standard Oil lubrication specialist serving your section of the Midwest will be glad to show you lubri cation records of Nonpareil in installations similor to your own. These records cover up to 25 years1 con tinuous operation of Individual units on original fills of oil. You can contact this specialist by phoning your local Standard Oil Company, 910 South Michigan Ave^ Chicago 80, Illinois. STANDARD OIL COMPANY (Indiana)