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Gold-Dredging On The Choco Rivers, Republic Of Colombia, South America.
By Henry S. Washington
Introduction. It Still Rains On The Choco ! I Well Remember One Evening A Dozen Years Ago, While. Traveling Toward The Town Of Negua In A Small Champa Or Dug-Out Canoe, The Rain Fell So Heavily That
Sep 1, 1908
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The Future Gold-Output Of Colombia.
By Henry G. Granger
A RESIDENCE of 14 years in the Republic of Colombia, spent in almost continuous traveling and prospecting-trips, has given me an intimate knowledge of the resources of that wonderful country. The man
Sep 1, 1908
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The Distribution Of The Elements In Igneous Rocks.
By Henry S. Washington
I. INTRODUCTION. DURING the last twenty years or so the chemical investigation of rocks has made great advances, and it is now generally recognized that a knowledge of the chemical composition is as
Sep 1, 1908
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Secrecy In The Arts.
By DR. DOUGLAS
Discussion of the Paper of Dr. Douglas, presented at the Toronto Meeting of the Institute, July, 1907 (Trans., xxxviii., 455 to 471). EDGAR HALL, Silverspur, Queensland, Australia (communication t
Sep 1, 1908
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A New Theory Of The Genesis' Of Brown Hematite-Ores; And A New Source Of Sulphur Supply.
By H. M. Chance
STRETCHING from New York southwestwardly to Georgia is a great range of hills and mountains consisting of pre-Palaeozic schists, slates, and gneissic and granitoid rocks, known locally by many differe
Sep 1, 1908
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Officers, For The Year Ending February, 1909
By AIME AIME
Council.* PRESIDENT OF THE COUNCIL. JOHN HAYS HAMMOND* New York, N. Y. (Term expires February, 1909.) VICE-PRESIDENTS OF THE COUNCIL. SAMUEL B. CHRISTY BERKELEY, CAL. JOHN A. CHURCH NEW YORK, N
Mar 1, 1908
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The Manhattan Cross-Town Tunnels Of The Pennsylvania Railroad.*
By AIME AIME
THE following brief description of the main features of the, engineering work was prepared for the use of members of the American Society of Civil Engineers and members of the American Institute of Mi
Mar 1, 1908
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The Tar-Sands of the Athabasca River, Canada.
By Robert Bell
THE " Tar-Sands." is the name which has been given to the extensive horizontal deposit of fine Cretaceous sand, blackened by tarry petroleum, which forms the banks of the last or lowest 130 miles of t
Mar 1, 1908
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Proceedings Of The Council.
By AIME AIME
The following report is published for the information of the members: Meetings. Two meetings for the reading and discussion of papers, etc., have been held during the year 1907-namely, the Ninety-se
Mar 1, 1908
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The Corrosion Of Water-Jackets Of Copper Blast-Furnaces.
By George B. Lee
DURING The Two Years In Which The New Reduction-Works Of The Copper Queen Consolidated Mining Co. Have Been In Operation At Douglas, Ariz., There Has Developed A Remarkable Condition In Regard To The
Mar 1, 1908
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Diamonds In Arkansas.
By George F. Kunz
THE recently discovered occurrence of diamonds near Murfreesboro, Pike county, Ark., was brought to. our attention by Mr. Samuel W. Reyburn (Trustee for Messrs. C. S. Stifft, A. D. Cohn, August Zinsse
Mar 1, 1908
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Biographical Notices, January And February, 1908.
By CHARLES W. BENTON
THE following paragraphs comprise such information as the Secretary has been able to obtain concerning the members and associates whose deaths have been reported. Further particulars or corrections of
Mar 1, 1908
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The Work Of The Testing Department Of The Watertown Arsenal, In Its Relation To The Metallurgy Of Steel.
By James E. Howard
AT the request of the Council of the Institute, I have the honor to submit the following remarks upon the Program of Tests under which the current work of the Watertown Arsenal Testing Laboratory is c
Mar 1, 1908
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Glossary Of Special Sizes, Shapes And Conditions of Iron and Steel.
By AIME AIME
IV. THE BOUNDARY BETWEEN STEEL AND IRON. It would be well to decide on a definite carbon-content to serve as a boundary line between ingot-iron and ingot-steel, between puddled-iron and puddled-steel
Mar 1, 1908
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Ore-Deposits Of The Eastern Gold-Belt Of North Carolina
By W. O. Crosby
INTRODUCTION. THE crystalline belt of the Atlantic Seaboard, south of New York, attains its maximum breadth of 220 miles on the northern border of North Carolina; and in this State it is most widely
Mar 1, 1908
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The Central Power-Station Of The De Beers Consolidated Mines, Ltd., Kimberley, South Africa.
By Percy A. Robbins
I. INTRODUCTION. THE central power-station. of the De Beers Consolidated Mines, Ltd., was designed and built under my supervision about five years ago. Since no detailed description of this plant has
Mar 1, 1908
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The Bogoslovsk Mining Estate.
By William H. Shockley
THERE was an, extensive mining and industrial exploitation of Russia, about 20 years ago, by Belgian, French and British capitalists; but the results were discouraging. It is said that the Belgian and
Mar 1, 1908
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Report Of The United Engineering Society
By AIME AIME
The following financial report of the Treasurer of the United Engineering Society is published for the information of members NEW YORK, February 15, 190S. To the Board of' Trustees, United Eng
Mar 1, 1908
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Proceedings Of The Board Of Directors.
By Charles D. Walcott
The following acts of the Directors are reported for the information of members At a meeting held June 20, 1907, Dr. Charles D. Walcott, Director of the U. S. Geological Survey, Washington, D. C., ha
Mar 1, 1908
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Proceedings Of The Ninety-Fourth Meeting, New York, February, 1908.
By Henry M. Howe
THIS meeting was held at the home of the Institute in the United Engineering Society Building, 29. West 39th St., New York, N. Y., Feb. 18 to 21, 1908. The first session, held in the large auditorium
Mar 1, 1908