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By W. M. McKewan

Jan 1, 1961

[New York Holds monthly meetings, except June, July and August. J. E. SPURR, Chairman A D. BROKAW, Vice-chairman SIDNEY ROLLE, Vice-chairman M. H. MERRISS, Secretary-treasurer, Nichols Copper Co., 25 Broad St., New York M. F. CHASE KARL HOFFMAN Boston Meets first Monday of each winter month. C. R. HAYWARD. Chairman E. C. GEITHER, Vice-chairman D. H. MCLAUGHLIN, Secretary-treasurer Rotch Bldg., Harvard Univ. Cambridge. Mass. GEO. H. GILMAN GEO. A. PACKARD]

Jan 1, 1928

Jan 1, 1953

Jan 1, 1948

By William P. Blake

AMONG the many interesting objects to be seen at the Vienna Exhibition last summer, the model of the system of underground transportation by a continually moving chain, adopted at the Hasard collieries, at Micheroux, near Liége, Belgium, was one of the most attractive, and full of valuable suggestion to mining engineers. These collieries are under the superintendence of the celebrated

Jan 1, 1874

Jan 1, 1935

By Otto F. Pfordte

In my paper on " The Refilling of Sulphides Obtaihed in the Lixiviation-Process with Hyposulphite Solutions " (Trans., xx., 37), I gave the outlines of a process for refining sulphides. In a subse-

Jan 1, 1893

(Members are urged to send in for this column any notes of interest concerning themselves or their fellow-members.) Members who registered at Institute headquarters during June: Ralph H. Sweetser, Columbus, Ohio. O. M. Bilharz, Rivermines, Mo. Etienne A. Ritter, Colorado Springs. Colo. Joseph A. Holmes, Washington, D. C. Dwight E. Woodbridge, Duluth, Minn. Francis Church Lincoln, Urbana, 111. Arthur Chippendale, Mexico City, Me'. William E. Saunders, Philadelphia, Pa. E. T. Miller, Louisville, Ky. E. P. Ross, Johnson City, Tenn. Jesse Scobey, Denver, Colo. H. M. Boylston, Cambridge, Mass. Charles Rhodes, Auckland, N. Z. Edward Keller, Perth Amboy, N. J. John W. Finch, Denver, Colo. F. G. Cottrell, San Francisco, Cal.

Jan 7, 1913

The 114th(New York) Meeting of the Institute will be held in the third week of February, 1917. The committee on Papers and Publications has set Dec. 1, 1916, as the closing date for the receipt of manuscripts intended for this meeting. . Manuscripts must be received by the Secretary on or before this date. If they are sent through members of the technical committees they must be sent to those committees enough in advance of the time to be forwarded and in the hands of the Secretary by the time specified.

Jan 10, 1916

Truman H. Aldrich '78 W. S. Ayres '73 Andrew A. Blair '75 Walter M. Brodie '72 H. M. Chance '74 Fred'k G Corning '77 Ralph Crocker '81 A. W. Crookston '80 George M. Davidson '81 W. B. Devereaux '80 H. S. Drinker Founder William E. C. Eustis '76 B. F. Fackenthal, Jr. '80 John Hays Hammond '81 Edward Hart '81 A. Heckscher '79 Henry D. Hibbard '79 Francis C. Holman '81 Julian Kennedy '79 William,St. George Kent '72 Frank Klepetko '80 Wheaton B. Kunhardt '80 Daniel J. Leary '81 Frank Lyman '77 John Markle '79 Samuel Mather '79

Jan 1, 1923

By John Birkinbine

The following data, collected during a visit to the Snake river district, in Idaho, arc offered as indicating the possible utilization of a water-fall for irrigation by pumping, the working of gold-placers, the generation of electricity for light and power, and possibly for manufacturing purposes. For irriga-

Jan 1, 1901

Organization Place Date 1913 Mining and Metallurgical Society of America New York, N. Y. Jan. 8 American Institute of Electrical Engineers New York, N. Y. Jan. 11 American Society of Civil Engineers New York, N. Y. Jan. 22-25 American Society of Heating and Ventilating Engineers : New York, N. Y. Jan. 22-25 American Institute of Mining Engineers New York, N. Y. Feb. 18-21 National Society for Promotion of Industrial Educa- tion New York, N. Y. Feb.. American Institute of Architects Washington, D. C. April American Iron and Steel Institute New York, N. Y. May New York Electrical Society New York, N. Y. June National Association of Stationary Engineers Cincinnati, 0. Sept. American Chemical Society Cleveland, 0. Sept.

Jan 1, 1918

(Under this heading will be published notes sent to the Secretary of the Institute by members or other persons introduced by members.) No. 488.-Mining engineer, member, technical graduate, married, age 38, desires position of superintendent or assistant superintendent. Has had 15 years' practical experience as miner, millman, machinist, surveyor, engineer, foreman, and superintendent in the West, Southwest, and Mexico. Speaks Spanish. Now employed as superintendent of copper property in Southwest. Can give the best of references. Minimum salary $250. Available after Sept. 1. No. 495.-Member, age 36, married, technical, 10 years'. all round

Jan 12, 1918

PRESIDENTS DAVID THOMAS 1871 R W RAYMOND 1872-1874 A L HOLLEY1875 ABRAM S HEWITT 1876 T STERRY HUNT 1877 ECKLEY B COXE 1878 - 1879 WILLIAM P SHINN 1880 WILLIAM METCALF 1881 RICHARD P ROTHWELL 1882 ROBERY W HUNT 1883 JAMES C, BAYLES 1884-1885 ROBERT H RICHARDS 1886 THOMAS EGLESTON 1887 WILLIAM B POTTER 1888 RICHARD PEARCE 1889 ADAM S HEWITT 1890 JOHN BIRKINBINE 1891-1892 H M HOWE 1893 JOHN FRITZ 1894 J D WEEKS 1895 E G SPILSBURY 1896

Jan 1, 1923

(The following list contains the names of those members of the Institute of whose connection with military service we have only recently become acquainted; it also includes the names of a few who have recently been promoted or transferred. A complete list was published in the Year Book, issued as a supplement of the Bulletin for March, 1918.) ANDREWS, CLARENCE W., 2d Lieutenant, 12th Batt. Infantry Replacement Regiment. ANDREWS, JOSEPH C., Ordnance Dept., U. S. A. ARLUCK, A. A., Headquarters, 1st Corps of Artillery, A. P. O.. No. 759, A. E. F.

Jan 9, 1918

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Jan 1, 1938

By R. A. Pasternak, B. Evans

In an ultrahigh-vacuum study of the sorption of nitrogen by niobium* resistivity data for this metal have been obtained as function of temperature and of low nitrogen concentrations. The ultrahigh-vacuum system in which base pressures of about 5 x l0-10

Jan 1, 1965

ENGINEERS AVAILABLE, (Under this heading will be published notes sent to the Secretary of the Institute by members or other persons introduced by members) Member, aged 33, technical graduate, B. S. and E. M., soon to complete contract in Spanish America, desires to get in touch with employers. Ten years mine, mill, cyanide and construction experience. Prefers executive position or assistant to executive. No. 352. Member; University graduate, desires responsible position with good company. Married.' Age; 37. Fourteen years' experience in Australia, Mexico and United States, milling, cyaniding and concentrating, gravity

Jan 5, 1917

By Persifor Frazer

Comparative columns expressing the series of rocks of the lower half of the Mesozoic age in this country and in Europe are not yet definitely established. The following represents a co-ordination of the beds in England and Germany,* with a list of materials to be worked in from this country .†

By O. S. Bogdanov, I. I. Maximov, L. A. Otrozhdennova, M. F. Emelyanov

Results of a study of flotation kinetics of martite particles as a function of bubble size and agitation intensity are presented. Effect of pulp dispersion on flotation separation of galena and secondary copper sulphides--bornite and chalcocite--are also discussed.

Jan 1, 1980