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SCIENTIFIC NOTES AND NEWS

Among the members of the ACADEMY who are now with the military forces of the United States are:

Lieutenant Colonel R. F. BACON, with the Chemical Service Section of the National Army, in France.

Brigadier General Wм. H. BIXBY, U. S. A., retired, President of the Mississippi River Commission and Division Engineer, Western Division River and Harbor Improvements, at St. Louis, Mo.

Major W. R. BLAIR, with the Meteorological Service of the Signal Corps, in France.

Major EDWARD H. BOWIE, with the Meteorological Service of the Signal Corps, in France.

Major ALFRED H. BROOKS, Geologist on the staff of General Pershing, American Expeditionary Forces, in France.

Major General WILLIAM CROZIER, U. S. A., Chief of Ordnance. Major L. A. FISCHER, Ordnance Officers' Reserve Corps, Bureau of Engineering.

Major General W. C. GORGAS, U. S. A., Surgeon General, Medical Corps.

Lieutenant Colonel HENRY S. GRAVES, with the Twentieth Engineers (Forestry) in France.

Captain CAREY V. HODGSON, Engineers' Reserve Corps, at Anniston, Alabama.

Major DOUGLAS W. JOHNSON, National Army.

First Lieutenant WALTER D. LAMBERT, Engineers' Reserve Corps. First Lieutenant M. W. LYON, JR., Medical Reserve Corps, at Walter Reed General Hospital, Washington.

Colonel JOHN MILLIS, U. S. A., Corps of Engineers, at the Office of the Division Engineer, Southeast Division, Savannah, Georgia. Brigadier General A. W. VOGDES, U. S. A., Retired, at San Diego, California.

Major W. H. WILMER, member Medical Research Board, and Assistant to Chief Surgeon, Aviation Section of the Signal Corps.

Captain FRED. E. WRIGHT, Ordnance Officers' Reserve Corps, detailed to the Bausch & Lomb optical glass plant in Rochester, New York.

Dr. H. M. AMI, formerly of the Geological Survey of Canada, is spending the winter in Washington. Dr. Ami is in charge of problems of war metals and minerals in the Trade Department of the British Embassy.

Dr. GEORGE E. HALE, Director of the Mount Wilson Solar Observatory at Pasadena, California, has been in Washington since last spring as Chairman of the National Research Council, which is now acting as the Department of Science and Research of the Council of National Defense.

Mr. NICHOLAS H. HECK has been transferred from the Coast and Geodetic Survey to the Navy Department, as a Lieutenant in the Naval Reserve Forces.

Dr. GEORGE TULLY VAUGHAN has been called to active service in the Medical Corps of the Navy.

Dr. OTTO KLOTZ, who with the late Dr. W. F. King, his predecessor, was a founder of the Dominion Astronomical Observatory at Ottawa, has been appointed Chief Astronomer and Director of the Observatory. Dr. Klotz has presented his scientific library of some 2000 volumes, a collection of a lifetime, to the Observatory.

Prof. CHARLES A. KOFOID, of the Department of Zoology, University of California, has been elected a corresponding member of the Société de Pathologie Exotique of Paris.

Prof. J. C. MERRIAM, of the University of California, has been in Washington for several months on business connected with the National Research Council.

Dr. CHARLES DOOLITTLE WALCOTT, Secretary of the Smithsonian Institution, has been elected a corresponding member of the Académie des Sciences of Paris in the section of geology, in place of Sir ARCHIBALD GEIKIE, who has been elected a foreign associate.

The following have become members of the ACADEMY since the beginning of the year: Prof. CHARLES AUGUST KRAUS, Clark University, Worcester, Massachusetts; Dr. PHILIP S. Roy, 1200 Massachusetts Avenue; Prof. JOHN WARREN SMITH, Weather Bureau; Dr. EDWIN FREDERICK WENDT, Interstate Commerce Commission.

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CONTENTS

ORIGINAL PAPERS

Physics. An optical ammeter. PAUL D. FOOTE....

Mineralogy.-Vivianite from the land pebble phosphate deposits of Florida. THOMAS L. WATSON and STAPLETON D. GOOCH.

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77

82

Petrology. The significance of glass-making processes to the petrologist. N. L. BOWEN..

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