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viii

D. R. D.

D. S. M.*

E. C. Ba.

E. C. C. E. D. M. E. D. S.

E. F. S.*

E. G. S. E. J.

E. L. C.

E.N.daC.A. E. Ru.

E. R. E. E. S. C. E. S. M.

E. T.

E. T. D. E. T. d'E.

E. VL E. v. W.

United States: Statistics.

United States: Agriculture.

Tanks.

DAVIS RICH DEWEY, PH.D., LL.D.

Professor of Economics and Statistics, Massachusetts Institute of Technology. Formerly Secretary of the American Statistical Association. Managing Editor of the American Economic Review. Author of Financial History of the United States. Editor of Francis Walker's Discussions in Economics and Statistics.

DAVID SAMUEL MARGOLIOUTH, M.A., D.Lnr., F.B.A.

Laudian Professor of Arabic in the University of Oxford. Editor of Yaquit's ( Pan-Islamism. Dictionary of Learned Men, etc. Author of Mohammed and the Rise of Islam; etc.

EUGENE CAMPBELL BARKER, PH.D.

Professor of American History, and Chairman of the Department of History, I _, University of Texas. Joint-author of A School History of Texas. Managing | Editor, Southwestern Historical Quarterly.

ELLERY CHANNING CHTLCOTT, M.S.

Chief of Dry Lands Investigations, Bureau of Plant Industry of the U.S. De- partment of Agriculture.

ERIC DENVERS MACNAMARA, M.A., M.D., F.R.C.P.

Lecturer in Psychological Medicine in the Charing Cross Hospital Medical { Psychotherapy. School. Physician to the West End Hospital for Nervous Diseases.

MAJOR-GENERAL ERNEST DUNLOP SWINTON, C.B., D.S.O.

Late Royal Engineers. Author of The Green Curve; The Great Tab Dope; The Defence of Duffer's Drift. Official " Eyewitness " with the British Army in France, 1914-5. Originator of the Tank. Raiser and first commander of the Tank Corps.

EDGAR FAHS SMITH, PH.D., CHEM.D., Sc.D., L.H.D., M.D., LL.D.

Late Provost of the University of Pennsylvania, and Emeritus Professor of Chemistry.

EMMA GURNEY SALTER, M.A., LITT.D.

Author of Franciscan Legends in Italian Art; Nature in Italian Art; etc.

MAJOR ERNST JOLY.

Late General Staff, Austro-Hungarian Army. Now of the Kriegsarchiv, Vienna. Part-author of the Austrian Official War Chronology Tables; etc.

EDGAR LEIGH COLLIS, M.A., M.D. (Oxon.), M.R.C.P. (Lond.).

Mansel Talbot Professor of Preventive Medicine, Welsh National School of Medicine. Late Director (Welfare and Health), Ministry of Munitions. H.M. Medical Inspector of Factories.

EDWARD NEVILLE DA COSTA ANDRADE, D.Sc., PH.D., F.INST.P.

Fellow of University College, London. Professor of Physics in the Artillery Col- lege, Woolwich.

SIR ERNEST RUTHERFORD, M.A., LL.D., F.R.S.

Cavendish Professor of Experimental Physics, University of Cambridge. Author of Radioactivity; Radioactive Substances and their Radiations; etc. See the bio- graphical article: RUTHERFORD, SIR ERNEST.

ERIC RUCKER EDDISON, B.A.

Controller of the Profiteering Act Department of the Board of Trade (London).

E. S. CATON.

Editor of Tobacco.

EDMOND STEPHEN MEANEY, M.S., M.L.

Professor of History in the University of Washington. Author of History of the ( Washington (State). Stale of Washington; Vancouver's Discovery of Puget Sound; etc. [

ELIHU THOMSON, A.M., PH.D., D.Sc.

Pennsylvania, University of.

< Rio de Oro.

f Przemysl, Sieges of;

I Strypa-Czernowitz ,


 * Battle of;

[ Vistula-San, Battle of the.

Welfare Work in Industry.

iRangefinders and Position- Finders (in part).

Radioactivity.

/ Profiteering: United \ Kingdom.

Tobacco (in part).

HU THOMSON, A.M., PH.D., D.Sc.

Consulting Engineer of the General Electric Company. Originator of Resistance j Welding, Electric. Electric Welding (Thomson Process). I

EDWARD THOMAS DEVINE, PH.D., LL.D. f United States :

Associate Editor of The Survey, New York. Author of Misery and its Causes; < w c if are The Normal Life; Disabled Soldiers and Sailors; etc. I

SIR EUSTACE HENRY WILLIAM TENNYSON D'EYNCOURT, K.C.B., F.R.S., D.Sc.

Commander of the Legion of Honour. Distinguished Service Medal (U.S.A.). Director of Naval Construction and Chief Technical Adviser to the British Admiralty. Chief Adviser on Tanks to the Ministry of Munitions during the World War. Vice-president of the Institution of Naval Architects.

Social and (i n part).

Ship and Shipbuilding.

ETHAN VIALL.

Editor of American Machinist. Member A.S.M.E., A.I.E.E., A.S.T.M., S.A.E. Author of Broaches and Broaching; Electric Welding; Gas-Torch and Thermit Welding; United States Rifles and Machine Guns; United States Artillery Am- munition; Manufacture of Artillery Ammunition; etc.

EDUARD VON WERTHEIMER.

Emeritus Professor of History in the University of Pressburg.

Thermit and Thermit

Welding ; Welding: Gas Torch.

(Szell, K.; < Szilagyi, D.; [ Tisza.