Thirteenth edition
Three new volumes published in 1926 replaced the 12th edition as a supplement to the 11th edition. The new volumes, together with the reprinted 11th edition, constituted the 13th edition. The new volumes were numbered 29 to 31, the 29th volume of the 11th edition becoming the 32nd volume of the 13th edition. It contained the separate indexes, classified lists of articles, and contributors’ lists to both the 11th and 13th editions. Hooper remained U.S. editor, but Chisholm had died and Cox chose J.L. Garvin (1868–1947), editor of The Observer, as London editor.
A selection of notable contributors to the 13th edition is provided in the table.
| author | article(s) |
|---|---|
|
|
Atomic Energy; Isotopes |
| Charles Glover Barkla | Quantum Theory |
| Bernard Baruch | Industry, War Control of, in part; Raw Materials |
| Edvard Beneš | Little Entente |
| Charles H. Best | Diabetes; Insulin |
| Niels Bohr | Atom |
| Nicholas Murray Butler | Columbia University; Education: United States in part |
| Alexis Carrel | Tissue Culture |
| Robert Gascoyne-Cecil, 1st Viscount Cecil | League of Nations in part |
| Marie Curie | Radium in part |
| W.E.B. Du Bois | American Literature in part |
| George Eastman | Photography in part |
| Sir Arthur Stanley Eddington | Universe: Electro-Magnetic Gravitational Schemes |
| Albert Einstein | Space-Time |
| Ferdinand Foch | Morale: In War |
| Henry Ford | Mass Production |
| Sigmund Freud | Psychoanalysis: Freudian School |
| Sir Arthur Harden | Bacteriology in part |
| Harry Houdini | Conjuring |
| Edward M. House | Paris, Conference of, in part |
| Sir Julian Huxley | Evolution: Introduction |
| Sir James Jeans | Solar Energy |
| Stephen Leacock | New Brunswick; Nova Scotia; Ontario; Prince Edward Island; Quebec |
| Suzanne Lenglen | Lawn Tennis |
| Sir Basil Liddell Hart | Tactics; World War |
| Walter Lippmann | Pulitzer, Joseph, in part |
| Ramsay MacDonald | Labour Party |
| J.J.R. Macleod | Physiology |
| Salvador de Madariaga y Rojo | Spain: Political history; Spanish Literature |
| Bronisław Malinowski | Anthropology |
| Guglielmo Marconi | Wireless Telegraphy and Telephony in part |
| Andrew W. Mellon | United States: Finance |
| H.L. Mencken | Americanism |
| Robert Andrews Millikan | Physics |
| Thomas Hunt Morgan | Evolution: Theory of Organic Evolution |
| Christopher Morley | Henry, O. |
| Fridtjof Nansen | Polar Exploration: The North Pole in part; Refugees |
| Allan Nevins | Pulitzer, Joseph, in part |
| Philip John Noel-Baker, Baron Noel-Baker | Disarmament; Sanctions and Guarantees |
| Hideyo Noguchi | Yellow Fever |
| Theodore William Richards | Atomic Weights |
| Sir Owen Willans Richardson | Magnetism |
| Elihu Root | Permanent Court of International Justice |
| Bertrand Russell | Knowledge, Theory of; Relativity: Philosophical Consequences |
| Edward Sapir | Philology |
| George Bernard Shaw | Socialism: Principles and Outlook |
| Frederick Soddy | Rays |
| Amos Alonzo Stagg | Football: United States; Physical Training: United States; Rugby: United States |
| Vilhjalmur Stefansson | Arctic Regions: Climate and Resources |
| Gustav Stresemann | Locarno, Pact of |
| Arnold Toynbee | Aaland Islands; Asia Minor; Dardanelles; Genoa, Conference of; Lausanne, Conference of; London, Conferences of; Memel; Mustafa Kemal; Pan-Turanianism; Paris, Conference of, in part; San Remo, Conference of; Silesia; Spa, Conference of; Turkey: History; Vilna |
| Leon Trotsky | Lenin |
| Émile Vandervelde | Belgium: Economic History; Second (Socialist) International |
A new supplement was needed only four years after the appearance of the 12th edition because the latter had been produced too soon after the end of World War I to give an objective account of the period. For the 13th edition the editorial board tried to share the available space more equitably between the subjects competing for entry. Thus, more words than previously were given to science and somewhat fewer to “those aspects of life and thought which lend themselves to literary description.” The aims were to show what really happened between 1910 and 1925 (without dwelling on the details of the conduct of the war) and to revive the international cooperation that had been shattered by the war. The political situation, however, still remained confused, so “the principle of Olympian judgment practised by the Encyclopædia Britannica at long leisure in more stable times” was abandoned in favour of letting each nation’s spokesman give its own account of its affairs since 1910. The contributors included Niels Bohr (“Atom”), Marie and Irène Curie (“Radium”), Albert Einstein (“Space-Time”), Henry Ford (“Mass Production”), Sigmund Freud (“Psycho-analysis”), George Bernard Shaw (“Socialism: Principles and Outlook”), and Leon Trotsky (“Lenin”).
Some material was carried over from the 12th edition, but the space saved by omitting details of World War I was used to give greater international coverage to the events and discoveries of the period than in the 12th edition (and therefore also than in the 11th edition), as can be seen by comparing the two classified lists of articles in the last volumes. It was clear, however, that the continued reprinting of the out-of-date 11th edition, even with supplements, could no longer be justified, and Cox determined to produce a revised edition of the whole work, aided financially by Sears. The financial aid needed was in practice so great that in 1928 Sears bought back the encyclopaedia, retaining Cox as publisher.