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HOWARTH, OSBERT JOHN RADCLIFFE, O.B.E., M.A. (OJ. R.H.) Assistant Secretary of the British Association. Sometime of the Geographical Section, Naval Intelligence Department Editor of the Oxford Survey of the British Empire. Geography; Malay States, Federated; Malay States, Non- Federated; Netherlands India; Pacific Ocean, Islands of; Straits Settlements and Dependencies; United Kingdom (Statistics).

HUBBARD, HOWARD ARCHIBALD, M.A. (H.A.H.) Associate Professor of History and Social Science University of Arizona. Arizona.

HUNTER, J. DE GRAFF, M.A., Sc.D. (J.DEG.H.) Mathematical Adviser to the Survey of India. Author of Formulae for Atmospheric Refraction and their Application to Terrestrial Refraction and Geodesy; Survey of India, Prof. Papers Nos. 14, 1913 {The Earth's Axes and Triangulation) , and 16, 1918. Geodesy (in part).

HURST, ARTHUR FREDERICK, M.A., M.D.(Oxon), F.R.C.P. (A.F.Hu.) Lieutenant-Colonel, late R.A.M.C. Physician and Neurologist to Guy's Hospital. Medicine and Surgery (Diseases in the World War).

HYDE, DOUGLAS, LL.D., D.Litt. (D.Hv.) Professor of Modern Irish in University College, Dublin. President of the Irish Texts Society. Author of Literary History of Ireland; etc. See biographical article: HYDE, DOUGLAS. Ireland (Language and Literature) ; Pearse, Patrick.

INGALLS, WALTER RENTON. (W.R.I.) Consulting Mining and Metallurgical Engineer, New York. Author of Metallurgy of Zinc and Cadmium. Copper.

INMAN, ARTHUR CONYERS, M.A., M.B., B.Ch.(Oxon.). (A.C.I.) Pathologist to the Brompton Hospital for Consumption. Hon. Captain, R.A.M.C. Special Bacteriologist in the British Expeditionary Force during the World War. Vaccine Therapy.

IRWTN, FLORENCE. (F.I.) Author of The Complete Auction Player; Master- Auction; etc. Bridge, Auction. JACKSON, SIR HERBERT, K.B.E., F.R.S. (HjN.) Director of Research, British Scientific Instruments Research Associa- tion. Emeritus Professor of Chemistry, University of London. Glass (in part).

JACKSON, MAJOR-GENERAL SIR LOUIS, K.B.E., C.B., C.M.G. (LJ.) Commander of the Legion of Honour. Knight of St. Stanislas. Late Royal Engineers. Formerly Director-General of Trench Warfare Supply, and Controller of Chemical War- fare Research, British War Office. Mining, Military; Poison Gas Warfare.

JAMES, HERMAN GERLACH, M.A., J.D., Ph.D. (H.G.J.) Professor of Government in the University of Texas. Author of Principles of Prussian Administration; Applied City Government; A Handbook of Civic Improvements; etc. Chile.

JEANS, JAMES HOPWOOD, M.A., LL.D., F.R.S. (J.H.jE.) Secretary of the Royal Society. Author of The Dynamical Theory of Gases; Problems of Cosmogony and Stellar Dynamics; etc. Relativity.

JOCELYN, COLONEL JULIAN ROBERT JOHN, C.B. (J.R.J.J.) Late Royal Artillery. Gold Medallist of the Royal Artillery Institution. Air Bombs (in part).

JOHNSON, BURGES, A.B.(Amherst). (B.J.*) Associate Professor of English and Director of the Bureau of Publication! Vassar College. Editor of the Bulletin of the Authors' League of America. Vassar College. JOHNSON, EMORY RICHARD, M.L., Ph.D., Sc.D. (E.RJ.) Professor of Transportation and Commerce and Dean of the Wharton School of Finance and Commerce, University of Pennsylvania. Author of Principles of Railroad Transportation; Principles of Ocean Transportation; etc. Interstate Commerce.

JOHNSTONE, JAMES, D.Sc. (J.J.) Professor of Oceanography' in the University of Liverpool. Author of Conditions of Life in the Sea; British Fisheries; etc. Oceanography.

JOLY, MAJOR ERNST. (EJ.) Late General Staff, Austro- Hungarian Army. Now of the Kriegsarchiv, Vienna. Part- author of the Austrian Official War Chronology Tables; etc. Army (Austro- Hungarian, in part); Brest Litovsk, Battles Round, 1915; Dunajec-San, Battles of the; Lemberg (Lvov), Battles Round (Part 1 1.); Lodz- Cracow, Battles of; Przemysl, Sieges of; Strypa- Czernowitz, Battle of; Vistula-San, Battle of the.

JONES, SIR ROBERT, K.B.E., C.B., D.S.M.(U.S.A.), F.R.C.S., Hon.D.Sc. (Wales), Hon.LL.D. (Aberdeen). (RJo.) Lecturer in Orthopaedic Surgery, Liverpool University. Director of Orthopaedic Surgery, St. Thomas's Hospital. Surgeon to the Royal National Orthopaedic Hospital. Hon. Adviser in Or- thopaedic Surgery, Ministry of Pensions. Orthopaedic Surgery.

JORGA, NICHOLAS, Dr. Juris. (N.J.) Professor at the Uni- versity of Bucharest. Member of the Academie Roumaine. Correspondent of the Institut de France and of the Academie Serbe. Author of Die Geschichte des Osmanescher Reiches; The Byzantine Empire; etc. Rumania (History).

JUNCK, LIEUTENANT-COLONEL WTLHELM. (WJ.*) Austro-Hungarian Engineer Corps. Formerly of the Munitions Section of the Austro-Hungarian Military Technical Committee and the Munitions Department of the War Ministry. Munitions of War ( Central Powers, in part).

KARSTEN, CARL. (C.K.*) Member of the Staff of the Deutsche Allgemeine Zeitung. Allenstein-Marienwerder; Ballin, A.; Berlin; Bernstorjf, Count; Dresden; Ebert, F;Erzberger, M. (in part); Eucken, R. C. (in part); Germany (Political History, in part); Saxony; Schleswig; Silesia, Upper.

KAY, J. A. (J.A.K.) Editor of the Railway Gazette. Railways (British).

KAYE, H. W., M.D.(Oxon.). (H.W.K.) Director of Medical Services, Ministry of Pensions. Late Personal Assistant to Chief Commissioner of Medical Services, Ministry of National Service. United Kingdom (Medical Examination of the Nation).

KEEBLE, FREDERICK WILLIAM, C.B.E., F.R.S. (F.KE.*) Sherardian Professor of Botany in the University of Oxford. Botany (Introductory).

KELLOG, VERNON LYMAN, M.S., LL.D. (V.L.K.) Permanent Secretary, National Research Council, Washington. Some- time Professor in Leland Stanford Jr. University. Director in Brussels of Commission for Relief in Belgium. Member of the American Relief Administration. Red Cross Work (United States); Y.M.C.A. (United States).

KELSEN, HANS, Dr. Juris. (H.K.) Professor of Constitutional Law at the University of Vienna. Austria, Republic of (Constitution and Administration). KENT, O. B., B.S., M.S., Ph.D. (O.B.K.) Professor of Poultry Department of New York State College of Agriculture at Cornell University. Managing Editor Poultry Science. Secretary-Treasurer of American Association of Instructors and Investigators of Poultry Husbandry. Poultry ( United States).

KERSHAW, JOHN BAKER CANNINGTON, F.I.C., F.S.S. (J.B.C.K.) Consulting Chemist and Chemical Engineer. Author of The Electric Furnace in Iron and Steel Production; Electrometallurgy; Electrothermal Methods of Iron and Steel Production. Electrochemistry and Electrometallurgy.

KIRK, EDWARD CAMERON, D.D.S., Sc.D., LL.D. (E.C.K.) Late Dean and Emeritus Professor of Dental Pathology and Therapeutics, Dental School, University of Pennsylvania. Editor of The Dental Cosmos. Dentistry.

KISZLING, LIEUTENANT-COLONEL RUDOLF. (R.K.) Late General Staff, Austro-Hungarian Army. Now of the Kriegs- archiv, Vienna. Eastern European Front Campaigns (in part) ; Luck, Battles of.

KITCHIN, JOSEPH, F.S.S. (J.K.) Manager in London of the Union Corporation, Limited. Gold.

KLIMBERG, BARON OTTO VON, Dr. Juris. (O.v.K.) Bosnia and Herzegovina.

KNECHT, EDMUND, Ph.D. (Zurich), M.Sc.Tech., F.I.C. (E.K.) Associate Professor of Applied Chemistry, Manchester Uni- versity and College of Technology. Dyeing ( United Kingdom).

KRAUSE, DR. ALLEN K. (A.K.K.) Staff of Johns Hopkins Hos- pital, Baltimore. Managing Editor of the American Review of Tuberculosis. Tuberculosis ( United States).

KRIEGK, OTTO, Ph.D. (Gottingen). (O.Ku.) Member of the Staff of the Weser Zeitung, Berlin Office.

Bremen; Hamburg.

The Initials in brackets indicate the Signatures adopted to distinguish the Contributors.