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By M. Weinstein, J. F. Elliott

IN conjunction with a study on the solubility of hydrogen in liquid pure iron and iron alloys, new and

Jan 1, 1963

Jan 1, 1933

Jan 1, 1896

DAVID THOMAS 1871 R.W. RAYMOND 1872-1874 A.L. HOLLEY 1875 ABRAM S. HEWITT 1876 T. STERRY HUNT 1877 ECKLEY B. COXE 1878-1879 WILLIAM P. SHINN 1880 RICHARD P. ROTHWELL 1881

Jan 1, 1932

Jan 1, 1942

Jan 1, 1938

We are advised by Second-Lieutenant Maxwell E. Erdofy, a member of the Institute, and athletic officer of the 602d Engineers, stationed at Camp Devens, Mass., that his regiment, representing all branches of the engineering profession, is in need of athletic equipment and supplies. The regiment will highly appreciate any assistance in the way of financial contributions, or of apparatus and equipment for their athletic needs.

Jan 5, 1918

By H. B. C. Nitze

Monazite is a phosphate of the rare earths, cerium, lantha num, and didymium (Ce, La, Di)PO,. It also contains thoria (Tho,) and silica, which are present in varying percentages, probably as impurities.

Jan 1, 1896

For the year ending February, 1918 PRESIDENT PHILIP N. MOORE ST. Louis, Mo. PAST PRESIDENTS WILLIAM L. SAUNDERS NEW YORK, N. Y. L. D. RICKETTS NEW YORK, N. Y. FIRST VICE-PRESIDENT SIDNEY J. JENNINGS NEW YORK, N. Y. 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, 1917

Early data about the amounts of coal used in making coke, and even of the first oven plants are meager. Table 84 shows the data about beehive ovens from 1841 to 1940, inclusive, and Table 85 shows the data about byproduct ovens from 1895 to 1940, inclusive.

Jan 1, 1942

[*DAVID THOMAB ...................... 1871 *R. W. RAYMOND .1872-1874 *A. L. HOLLEY ....................... 1876 *Asurn 8. H~WITT ................... 1876 *T.ST~RYHUNT ..................... 1877 *ECKLBY B. COXB .1878-1879 *WILLIAM P. BHINN .................. 1880]

Jan 1, 1946

By G. W. Toop

Jan 1, 1965

By J. E. Warren, J. H. Hartsock

In the receipt of J. E. Warren and J. H. Hartsock's comments on our paper, "Aspects of Gas Deliverability", We wish to point out that all the physical characteristics we conceived as constant were absorbed in the gas deliverability constant of the individual well's performance, listed

MINING METHODS F A WARDLAW, JR, Chairman WILLIAM J COULTER, Past Chairman PHILIP B BUCKY, Past Chairman FRANCIS CAMERON, Vice-Chairman R D LONGYEAR, Vice-Chairman J MURRAY RIDDELL, Vice-Chairman LELAND A WALKER, Vice-Chairman E D GARDNER, Secretary

Jan 1, 1952

By R. W. Raymond

HAVING had recently the opportunity of examining a transit and a plummet-lamp, manufactured by Messrs. Heller & Brightly, of Philadelphia, and intended for the use of mining engineers in under-

Jan 1, 1873

By Charles M. Rolker

I desire to put on record this memorandum and accompanying sketch of a vein examined by me, in Honduras, Central America, which exhibits a well-marked banded structure. The illustration is of natural size: The vein traverses trachytic porphyry. It is from three to four inches wide. The central band, a, is of white quartz, one inch wide

Jan 1, 1886

STANDING COMMITTEES Executive-A. R. LEDOUX, chairman. Membership-GEORGE C. STONE, chairman. Finance-J. V. N. DORR, chairman. Library-E. GYBBON SPILSBURY, chairman. Papers and Publications-BRADLEY STOUGHTON, chairman. Nominations-POPE YEATMAN, chairman.

Jan 7, 1919

New Products Equipment

Jan 11, 1950

Executive-A. R. LEDOUX, chairman. Membership-J. V. W. REYNDERS, chairman. Finance-J. V. N. Dorr, chairman. Library-E. GYBBON SPILSBURY, chairman. Papers and Publications-BRADLEY STOUGHTON, chairman. Nominations-POPE YEATMAN, chairman.

Jan 12, 1919

Jan 1, 1944