In her 1915 collection titled Verse, published one year after her death, Crapsey included 28 cinquains.

During November 1915 Einstein published several papers culminating in " The Field Equations of Gravitation " ( see Einstein field equations ).

The first book, Doctor Syn: A Tale of the Romney Marsh was published in 1915.

Adelaide Crapsey codified the couplet form into a two line rhymed verse of ten syllables per line with her image couplet poem On Seeing Weather-Beaten Trees, first published in 1915.

One of the most extensive was perhaps the work done in Riga by Krisjanis Barons who between the years between 1894 and 1915 published six volumes including the texts of 217 996 Latvian folk songs ; the Latvju dainas.

The Trial ( Kafka's original German title:, later as and ) is a novel written by Franz Kafka in 1914 and 1915 but not published until 1925.

In 1915, Malevich laid down the foundations of Suprematism when he published his manifesto From Cubism to Suprematism.

The theory of guild socialism was developed and popularised by G. D. H. Cole who formed the National Guilds League in 1915 and published several books on guild socialism, including Self-Government in Industry ( 1917 ) and Guild Socialism Restated ( 1920 ).

In response to the outbreak of World War I, Lenin wrote his book Imperialism, the Highest Stage of Capitalism from 1915 to 1916 and published in 1917 in which he argued that capitalism directly leads to imperialism.

In 1915, he published his Memoir of a Trans-Neptunian Planet, in which he concluded that Planet X had a mass roughly seven times that of the Earth — about half that of Neptune — and a mean distance from the Sun of 43 AU.

Max Weber published four major texts on religion in a context of economic sociology and his rationalization thesis: The Protestant Ethic and the Spirit of Capitalism ( 1905 ), The Religion of China: Confucianism and Taoism ( 1915 ), The Religion of India: The Sociology of Hinduism and Buddhism ( 1915 ), and Ancient Judaism ( 1920 ).

* Russell Thorndike: The Doctor Syn novels – a series of seven novels about Doctor Syn, the Smuggler of Romney Marsh, published between 1915 and 1944

After 1915, when Albert Einstein published the theory of gravity ( general relativity ), the search for a unified field theory combining gravity with electromagnetism started again with renewed intensity.

His daughter May's edition of Morris's Collected Works ( 1910 – 1915 ) runs to 24 volumes, and two more were published in 1936.

His composition " Jelly Roll Blues " was the first published jazz composition, in 1915.

Robert himself published the first four editions before his death in 1923, the last being the thoroughly revised and expanded fourth edition published as Robert's Rules of Order Revised in May 1915.

* 1915 – Karl Schwarzschild publishes the Schwarzschild metric about a month after Einstein published his general theory of relativity.

Brooke's most famous collection of poetry, containing all five sonnets, 1914 & Other Poems, was first published in May 1915 and, in testament to his popularity, ran to 11 further impressions that year and by June 1918 had reached its 24th impression ; a process undoubtedly fuelled through posthumous interest.

1915 ) ( originally published in stages.

Toynbee investigated Zionism in 1915 at the Information Department of the Foreign Office, and in 1917 he published a memorandum with his colleague Lewis Namier which supported exclusive Jewish political rights in Palestine.

In a speech to the East Otago Federation of Women ’ s Institutes, Professor Helen Leach, of the Archaeology Department of the University of Otago in New Zealand, stated that the first published use of the name Anzac in a recipe was in an advertisement in the 7th edition of St Andrew's Cookery Book ( Dunedin, 1915 ).

Another possible influence was thought to be a character in the Edgar Rice Burroughs fantasy novel H. R. H. The Rider which features a " Prince Boris of Karlova ", but as the novel was not published until 1915, the influence may be backward, that Burroughs saw Karloff in a play and adapted the name for the character.

It was then sent to Punch, where it was published on December 8, 1915.

* 1915 – US Navy salvage divers raise F-4, the first U. S. submarine sunk in accident.

* 1915 – Sirimavo Bandaranaike, Sri Lankan politician and the world's first female head of government ( d. 2000 )

They acquired premises at Henniker Place in Kensington and produced their first car in March 1915.

From 1915 to 1918, Berg served in the Austro-Hungarian Army and during a period of leave in 1917 he accelerated work on his first opera, Wozzeck.

After recovering in early 1915, he was appointed to be brigade major first of 112th Brigade and then with 104th Brigade under training in Lancashire.

Wegener was the first to use the phrase " continental drift " ( 1912, 1915 ) ( in German " die Verschiebung der Kontinente " – translated into English in 1922 ) and formally publish the hypothesis that the continents had somehow " drifted " apart.

Presented in 1915 by Wolfgang Gaede and using mercury vapor, they were the first type of high vacuum pumps operating in the regime of free molecular flow, where the movement of the gas molecules can be better understood as diffusion than by conventional fluid dynamics.

The first major challenge to conventional eugenics based upon genetic inheritance was made in 1915 by Thomas Hunt Morgan, who demonstrated the event of genetic mutation occurring outside of inheritance involving the discovery of the hatching of a fruit fly with white eyes from a family and ancestry of the red-eyed Drosophila melanogaster species of fruit fly.

The first Russian examples were all made by Yevgeni Bauer for Khanzhonkov during the First World War, and include Grezy, Schastye vechnoi nochi, and Posle smerti, all from 1915.

The first of these was Cecil B. DeMille, whose films, such as The Cheat ( 1915 ), brought out the moral dilemmas facing their characters in a more subtle way than Griffith.

Garros ' modified monoplane was first flown in March 1915 and he began combat operations soon thereafter.

The first victory for the Eindecker came on 1 July 1915, when Leutnant Kurt Wintgens, flying with the Feldflieger Abteilung 6 unit on the Western Front, forced down a Morane-Saulnier Type L two-seat " parasol " monoplane just east of Luneville.

* 1915 – World War I: The first naval attack on the Dardanelles begins when a strong Anglo-French task force bombards Ottoman artillery along the coast of Gallipoli.

The term " Fascism " was first used in 1915 by members of Mussolini's movement, the Fasci of Revolutionary Action.

The first use of poison gas on the Western Front was on 22 April 1915, by the Germans at Ypres, against Canadian and French colonial troops.

While the first reference to " guising " in North America occurs in 1911, another reference to ritual begging on Halloween appears, place unknown, in 1915, with a third reference in Chicago in 1920.

The ham was awarded first prize in the 1915 Panama International Merchandise Exhibition.

* 1915 – World War I: Germany is the first to make large-scale use of poison gas in warfare in the Battle of Bolimów against Russia.

* 1915 – RFC Captain Lanoe Hawker becomes the first British military aviator to earn the Victoria Cross, for defeating three German two-seat observation aircraft in one day, over the Western Front.

* 1915 – Lieutenant Kurt Wintgens achieves the first known aerial victory with a synchronized machine-gun armed fighter plane, the Fokker M. 5K / MG Eindecker.

* 1915 – Henry James becomes a British citizen, to highlight his commitment to England during the first World War.

* 1915 – World War I: German zeppelins bomb the towns of Great Yarmouth and King's Lynn in the United Kingdom killing more than 20, in the first major aerial bombardment of a civilian target.

In 1915, Regret became the first filly to win the Kentucky Derby ( of only three in the history of the race ), and in 1917, the English-bred colt " Omar Khayyam " became the first foreign-bred horse to win the race.