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Jan 1, 1907

Jan 1, 1949

For the year ending February, 1916 PRESIDENT WILLIAM L. SAUNDERS,1 NEW YORK, N. Y. PAST PRESIDENTS CHARLES F. RAND,1 NEW YORK, N. Y. BENJAMIN B. THAYER,3 NEW YORK, N. Y. FIRST VICE-PRESIDENT PHILIP N. MOORE,1 . . . ST. Louis, Mo. TREASURER GEORGE C. STONE,1. NEW YORK, N. Y. SECRETARY EMERITUS ROSSITER W. RAYMOND, NEW YORK, N. Y. SECRETARY BRADLEY STOUGHTON NEW YORK, N. Y.

Jan 11, 1915

Jan 1, 1902

Jan 1, 1943

PRESIDENT. CHARLES F. RAND,1 NEW YORK, N. Y. PAST PRESIDENTS. CHARLES KIRCHHOFF,1 NEW YORK, N. Y. JAMES F. KEMP,2 NEW YORK, N. Y. FIRST VICE-PRESIDENT. BENJAMIN B. THAYER,1 NEW YORK, N. Y. TREASURER. GEORGE C. STONE,1 NEW YORK, N. Y. SECRETARY EMERITUS. ROSSITER W. RAYMOND NEW YORK, N. Y. SECRETARY. BRADLEY STOUGHTON NEW YORK, N. Y.

Jan 10, 1913

Jan 1, 1938

Jan 1, 1949

PRESIDENT AND DIRECTOR EUGENE MCAULIFFE OMAHA, NEBR. PAST PRESIDENTS AND DIRECTORS HERBERT G. MOULTON NEW YORK, N. Y. JOHN R. SUMAN HOUSTON, TEXAS TREASURER AND DIRECTOR H. T. HAMILTON NEW YORK, N. Y. VICE PRESIDENTS AND DIRECTORS ERLE V. DAVELER NEW YORK, N. Y. W. M. PEIRCE PALMERTON, PA. PAUL D. MERICA NEW YORK. N. Y. LEROY SALSICH DULUTH, MINN. CHESTER A. FULTON NEW YORK, N. Y. L. E. YOUNG PITTSBURGH, PA.

Jan 1, 1942

PRESIDENT BENJAMIN B. THAYER,2 NEW YORK, N.. Y. PAST PRESIDENTS JAMES F. KEMP,1 NEW YORK, N. Y. CHARLES F. RAND,2 .NEW YORK, N. Y. FIRST VICE-PRESIDENT SIDNEY J. JENNINGS,1 NEW YORK, N. Y. TREASURER GEORGE C. STONE,1 NEW YORK,. N. Y. SECRETARY EMERITUS ROSSITER W. RAYMOND, NEW YORK, N.Y. SECRETARY BRADLEY STOUGHTON NEW YORK, N. Y.

Jan 9, 1914

Jan 1, 1932

Jan 1, 1902

Jan 1, 1939

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 4, 1918

Jan 1, 1935

Jan 1, 1939

C. H. MATHEWSON, Chairman SAM TOUR, Past-chairman W. A. SCHEUCH, Vice-chairman T. S. FULLER, Vice-chairman W. M. CORSE, Secretary-Treasurer 810 Eighteenth St., N. W. Washington, D. C. Executive Committee J. L. CHRISTIE ARTHUR PHILLIPS E. H. Dix, JR. GUY C. RIDDELL W. M. PRIRCE J. WALTER SCOTT' A. J. PHILLIPS' H. M. WILLIAMS EL M. WISE

Jan 1, 1932

[OFFICERS AND COMMITTEES J. W. Woomer, President A. B. Cummins, President-elect S. D. Michaelson, Past President C. E. Lawall, Eastern Regional Vice-President D. W. Scott, Central Regional Vice-President J. D. Forrester, Western Regional Vice-President R. B. Ladoo, Treasurer John Cameron-Fox, Secretary]

Jan 1, 1961

By Robert Mehl

IT has been shown that quenched iron of high purity exhibits a Widmanstätten figure much resembling martensite in appearance.1 This figure exhibits a maximum of four directions of the surface traces that characterize it, suggesting that a Fe forms from y Fe in plates parallel to the {111}, octahedral, planes in the y lattice. Because of this, and also because of the general similarity to the structural appearance of martensite and to the Widmanstätten figure obtaining in slowly cooled hypoeutectoid steels it has been suggested2 that the orientation relation-ships obtaining between the y and a phases in pure iron are identical with those demonstrated in martensite3 and in slowly cooled hypoeutectoid steels,4 and indeed that the crystallographic mechanism of formation of a Fe from y Fe is the basic mechanism determining the orientation relation-ships found in both martensite and in slowly cooled hypoeutectoid steels. This paper will present experimental evidence in support of this view.

Jan 1, 1934

Jan 1, 1938