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By Henry Louis

Four alloys of gold and silver were prepared, containing the metals in the following proportions by weight: I. Gold:Silver::1:2.62.

Jan 1, 1894

Jan 1, 1898

Jan 1, 1950

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Jan 1, 1938

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Jan 1, 1938

Jan 1, 1933

Plans are now being made for the formation of the American Meteorological Society, which has for its object the advancement and diffusion of the knowledge of meteorology and climatology said the broadening of their applications in public health, agriculture engineering, industry and commerce. Information regarding the society may be obtained from Charles F. Brooks, Weather Bureau, Washington, D. C.

Jan 12, 1919

By Cheri Eby, William R. Eby

This paper describes the state-of-the-art of pneumatic transport systems that are capable of conveyinq waste cuttings generated by raise drills during shaft construction projects. Additionaly other examples of applications pertaining to pneumatic transport systems qualified to convey abrasive and nonabrasive materials (&., gravel, shale, coal, ore, and limestone) will be presented.

Jan 1, 1982

Jan 1, 1915

[Alabama, University of, University, Ala California, University of Berkeley, Cal Carnegie Inst, of Technology, Pittsburgh, Pa Case School of Applied Science, Cleveland, Ohio Colorado School of Mines Columbia University, New York City Harvard University, Cambridge, Mass Idaho, University of, Moscow, Idaho Illinois, University of, Urbana, Ill Iowa State College, Ames, Iowa Kansas, University of, Lawrence, Kan Lafayette College, Easton. Pa ]

Jan 1, 1928

[Allen -Sherman-Hoff Pump Co Third Cover Dee Carlton Brown. Advertising Allis-Chalmers Mfg. Co 436,519 Compton Advertising, Inc. American Cyanamid Co * James J. McMahon. Inc. American Manganese Steel Div., American Brake Shoe Co 444 Fuller & Smith & Ross, Inc. Anaconda Copper Mining Co 449 Kenyon & Eckhardt Inc. Carton Products Corp. * Penn and Hamaker, Inc. Chicago Pneumatic Tool Co 431 G. M. Basford Co.]

Jan 1, 1952

Jan 1, 1935

Jan 1, 1935

Jan 1, 1935

Jan 1, 1935

MANY kinds of marcasite* are found since every metallic mineral, and perhaps some of the semiminerals, produces its own. I believe that [28v] rnarcasites are nothing other than the secondary materials and the menses of the conception of metals which, through insufficient time, have yet to arrive at their perfect age; and thus, because of

Jan 1, 1942

For the year ending February, 1919 PRESIDENT SIDNEY J. JENNINGS NEW YORK, N. Y. PAST PRESIDENTS L. D. RICKETTS NEW YORK, N. Y. PHILIP N. MOORE ST. Louis, Mo. FIRST VICE-PRESIDENT C. W. GOODALE BUTTE, MONT. TREASURER GEORGE C. STONE, NEW YORK, N. Y. SECRETARY EMERITUS ROSSITER W. RAYMOND, NEW YORK, N. Y. SECRETARY BRADLEY STOUGHTON NEW YORK, N. Y.

Jan 9, 1918

PRESIDENT AND DIRECTOR D.C. JACKLING SAN FRANCISCO, CALIF. PAST PRESIDENTS AND DIRECTORS NEW YORK, N. Y. R. C. ALLEN- CLEVELAND, OHIO VICE-PRESIDENT, TREASURER AND DIRECTOR KARL EILERS-* NEW YORK, N. Y. VICE-PRESIDENTS AND DIRECTORS HENRY KRUMB NEW YORK, N. Y. PAUL D. MERICA . NEW YORK, N. Y. H. G. MOULTON NEW YORK, N. Y. HARVEY S. MUDD Los ANGELES, CALIF. WILFRED SYKES CHICAGO, ILL.

Jan 1, 1938

By M. Oka, C. M. Wayman

It has been known for some time1 that (110)b twinning is possible in bct martensite.* Any plane of the form (110) not parallel to the fourfold axis of tetra-

Jan 1, 1969

Jan 1, 1935