By the 1930s, a series of favorable biographies enhanced his prestige.

By the 1930s, statisticians and models built on statistical reasoning had helped to resolve these differences and to produce the neo-Darwinian modern evolutionary synthesis.

By 1921 he was the majority owner, maintaining that status into the 1930s.

By the late 1930s, Thomas was embraced as the " poetic herald " for a group of English poets, the New Apocalyptics.

By the 1930s, Ben Duncan and others popularized streamlined trap kits leading to a basic four piece drum set standard: bass, snare, tom-tom, and floor tom.

By the 1930s, the five-line cinquain verse form became widely known in the poetry of the Scottish poet William Soutar.

Despite the revivalists ' various political views and different opinions regarding the nature of authentic folk music, they all shared an understanding of Americanism that grounded the nation's identity in cultural pluralism and political democracy " By the end of the 1930s they along with the musicians and others had turned American folk music into a social movement.

By the 1930s, Italian fascism had created a review board for popular culture.

By the 1930s it was in wide use.

By the late 1930s and the 1940s, Italian Fascism completely denounced capitalism as an obsolete and oppressive system, Mussolini in 1940 at the entry of Italy into World War II, said:

By the 1930s, several faith healers drew large crowds and established worldwide followings.

By the early 1930s Gardner's activities had moved from those exclusively of a civil servant, and he began to think of himself more as a folklorist, archaeologist and anthropologist.

By the 1930s the place would evolve to become her greatest legacy, the Whitney Museum of American Art, on the site of today's New York Studio School of Drawing, Painting and Sculpture.

By the 1930s, Genosha Bay later became a United States extraterritorial prison which hold prisoners of the worse cases from around the world and was notorious for practicing inhumane punishments on its prisoners ranging from sleep deprivations and water torture.

By the end of the 1930s, the PNH was the only organized functioning political party in the nation.

By the late 1930s it had become dangerous to be publicly associated with religion.

By the 1930s, the guitar began to displace the banjo as the primary chordal rhythm instrument in jazz music, because the guitar could be used to voice chords of greater harmonic complexity, and it had a somewhat more muted tone that blended well with the upright bass, which, by this time, had almost completely replaced the tuba as the dominant bass instrument in jazz music.

As for the contradiction between German rearmament and his message of peace, Ribbentrop argued to whoever would listen that the German people had been “ humiliated ” by the Versailles treaty, that Germany wanted peace above all, and German violations of Versailles were part of an effort to restore Germany's " self-respect " By the 1930s, much of British opinion had been convinced that the treaty was monstrously unfair and unjust to Germany, so as a result, many in Britain like Thomas Jones were very open to Ribbentrop ’ s message that if only Versailles could be done away with, then European peace would be secured.

By the later 1930s government began to intrude on ordinary Africans through marketing controls, stricter educational supervision, and land changes.

By the 1930s, approximately 30, 000 white settlers lived in the area and gained a political voice because of their contribution to the market economy.

By 1870 Liberia had sunk into financial crisis, which dragged on into the 1930s.

By the late 1930s the Luftwaffe had no clear purpose.

By the 1930s it was clear that if the Soviet cinema was to compete with its Western counterparts, it would have to give audiences what they wanted: the glamour and fantasy they got from Hollywood.

By the 1930s, many revisions of the rules developed that were substantially different from Babcock's classical version ( including some that were considered fundamentals in other variants, such as the notion of a standard hand ).

By the mid 19th century, many boats had been built with iron or steel frames but still planked in wood.

By the time of the Russo-Japanese War in 1904, TBDs were " large, swift, and powerfully armed torpedo boats designed to destroy other torpedo boats.

By the 1880s, these had evolved into small ships of 50-100 tons, fast enough to evade enemy picket boats.

By 2002 the Falklands ' economy was booming, with income from tourism and the sale of squid fishing licences as well as from indigenous fishing companies with locally registered boats.

By the 17th century, wooden wagonways were common in the United Kingdom for transporting coal from mines to canal wharfs for transshipment to boats.

By the turn of the 20th century, the term no longer included mines and booby-traps as the navies of the world added submarines, torpedo boats and torpedo boat destroyers to their fleets.

By World War II torpedo boats were seriously hampered by higher fleet speeds ; although they still had a speed advantage, they could only catch the larger ships by running at very high speeds over very short distances, as demonstrated in the Channel Dash.

By 1889 the first 6 electric charter boats were working on the Thames and in the 1893 Chicago World Fair 55 carried more than a million passengers.

By purchasing green electricity it is possible to operate electric boats using sustainable or renewable energy.

* By the use of any power vehicle or power boats for herding or driving animals, including use of aircraft to land alongside or to communicate with or direct a hunter on the ground.

By December 1918, Holt Thomas claimed in an advertisement that Airco was the largest aircraft company in the world and was building aeroplanes, engines and propellors in large numbers, as well as airships and flying boats.

By war's end, more of the Elco boats were built than any other type of motor torpedo boat ( 326 of their boats were built ).

By the early nineteenth century, horse-drawn canal boats were traveling all the way upstream to Charlottesville, Charlottesville.

By 1832, Lewis Weiss began building boats for the Lehigh Coal and Navigation Company and the Morris Canal & Banking Company.

By 1828, boats were traversing of " tolerable good and safe navigation " of the Roanoke River between Brookneal and Salem.

By 1929, three passenger boats left the Indianola dock for Seattle every day, and the 1930s brought more connections to the outside world.

By 1797 the aqueduct was open, carrying the canal above the river, and boats were now able to travel the from Preston to Tewitfield.

By the latter part of the 19th century it was common practice to paint roses and castles on both narrow boats themselves and their fixtures and fittings.

By 1823, as a result of pressure from carriers, boats were allowed to use the navigation at any time during the week, but the company refrained from authorising use on Sundays as they could not " consent to so great a Deviation from established Custom ".

By the 1950s, the southern section was un-navigable by canal boats, as several of the locks could not be operated, and some of the small pounds between the locks of the Wilmcote flight were dry.

By the 1880s, there was dissatisfaction among the users that the rates for traffic were higher than on the railways, and the canals were failing to modernise, as steam boats were banned, despite them having been in use for 50 years on the neighbouring Aire and Calder Navigation.