By the 1940s, the term commonly was capitalized, Negro, but by the mid 1960s it was considered disparaging.

By the Roman period brass was being deliberately produced from metallic copper and zinc minerals using the cementation process and variations on this method continued until the mid 19th century.

By the mid late 18th century developments in cheaper zinc distillation such as John-Jaques Dony's horizontal furnaces in Belgium and the reduction of tariffs on zinc as well as demand for corrosion resistant high zinc alloys increased the popularity of speltering and as a result cementation was largely abandoned by the mid 19th century.

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

By the mid 1960s, binary addressing had become the standard architecture in most computer designs, and main memory sizes were most commonly powers of two.

" By the mid 2000s, bikinis had become a $ 811 million business annually, according to the NPD Group, a consumer and retail information company.

By the mid 1970s, born again Christians were increasingly referred to in the mainstream media as part of the born again movement.

By the mid 20th century, with the growing market for rare coins, the Sheldon system was adopted by the American Numismatic Association and most coin professionals in the North America.

By cutting transportation costs in half or more it became a large profit center for Albany, New York and New York City as it allowed the cheap transportation of many of the agricultural products grown in the mid west of the United States to the rest of the world.

By the mid 19th century, Edward Frankland, F. A.

By the mid to late 2000s, many disco-influenced songs were hits.

By mid century, the cooperative Christian Churches and the independent Christian Churches were following different paths.

By the mid — 18th century the French chemist Charles François de Cisternay du Fay had discovered two types of static electricity, and that like charges repel each other whilst unlike charges attract.

By the mid 1970s, there were enough media zines being published that adzines existed just to advertise all of the other zines available.

By the mid 19th century, the South, The city of New Orleans in particular, being situated as a key to commerce on the Mississippi River and in the Gulf, had become the largest U. S. city not on the Atlantic seaboard and the fourth largest in the U. S. overall.

By the mid 17th century, numerous small Dutch and Flemish distillers ( some 400 in Amsterdam alone by 1663 ) had popularized the re-distillation of malt spirit or wine with juniper, anise, caraway, coriander, etc., which were sold in pharmacies and used to treat such medical problems as kidney ailments, lumbago, stomach ailments, gallstones, and gout.

By the mid 1890s, the Golden Dawn was well established in Great Britain, with membership rising to over a hundred and including every class of Victorian society.

By the mid 1960s, Viola Spolin's classes were handed over to her protégé, Jo Forsberg, who further developed Spolin's methods into a one-year course, which eventually became The Players Workshop, the first official school of improvisation in the USA.

By the mid 1970s, Sweden experienced a recession that struck especially hard on the industrial sector ; shipyards and manufacturing industries were hard hit, which led to high unemployment in many cities of Scania.

By mid July, the team found themselves only 10 games out of the division lead.

By mid July, North Korean troops overwhelmed the South Korean and allied American units defending South Korea and forced them back to a defensive perimeter in south-east South Korean known as the Pusan Perimeter.

By the mid to late-1970s some parts of the capitalist world, including South Korea, were creating new industries based around computers, electronics, and other advanced technology in contrast to North Korea's Stalinist economy of mining and steel production.

By mid July they had Somoza and the National Guard isolated in Managua.

By the mid 19th century, the industrial revolution had transformed England and had begun in France.

By the 1870s, the Transcontinental Railroad reached its terminus in Oakland.

By the late 1870s, however, croquet had been eclipsed by another fashionable game, tennis, and many of the newly-created croquet clubs, including the All England club at Wimbledon, converted some or all of their lawns into tennis courts.

By the 1870s, Herbert Spencer and other classical liberals concluded that historical development was turning against them.

By the 1870s, British physicist William Crookes and others were able to evacuate tubes to a lower pressure, below 10 < sup >− 6 </ sup > atm.

By the 1870s, the canal's goods traffic had dwindled to just three major types of bulk goods-forest products, coal and ore, none of which required rapid transportation.

By the 1870s, the Sublime Porte's reforms aimed at checking the Ottoman Empire's disintegration had clearly failed.

By the end of the 1870s, a major change had taken place: philosophy of the rationalist or eclectic kind, generally Kantian, had taken over rhetoric as the true end stage of secondary education ( the so-called Class of Philosophy bridged secondary and university education ).

By the mid 1870s, evolutionism was triumphant.

By the mid 1870s, most scientists accepted evolution, but relegated natural selection to a minor role as they believed evolution was purposeful and progressive.

By the 1870s, efficient generators that produced alternating current ( alternators ) were available, and it was found that alternating current could power an induction coil directly, without an interrupter.

By the 1870s, the firm was offering both designs for embroideries and finished works.

By the 1870s, McGonagall and his family were struggling.

By the end of the American Civil War, the Observatory's clocks were linked via telegraph to ring the alarm bells in all of the Washington, D. C. firehouses three times a day, and by the early 1870s the Observatory's daily noon time signal was being distributed nationwide via the Western Union Telegraph Company.

By the 1870s, breweries had become the largest users of commercial refrigeration units, though some still relied on harvested ice.

By the 1870s the future king had taken a keen interest in horseracing and steeplechasing.

By the 1870s, Reconstruction had officially provided freedmen with equal rights under the constitution, and blacks were voting and taking political office.

By the 1870s J. C. Godeffroy und Sohn of Hamburg ( operating out of Samoa ) began to dominate the Tuvalu copra trade, which company was in 1879 taken over by Handels-und Plantagen-Gesellschaft der Südsee-Inseln zu Hamburg ( DHPG ).

By the later 1870s Degas had mastered not only the traditional medium of oil on canvas, but pastel as well.

By the 1870s Echuca had risen to prominence as Australia's largest inland port.

By the end of the 1870s the stage was set for discontent among the aboriginal people of the prairies: the bison population was in serious decline ( creating enormous economic difficulties ) and, in an attempt to assert control over aboriginal settlement, the federal government often violated the terms of the treaties it had signed during the latter part of the decade.

By the late 1870s, white Democrats had regained their political power in the state legislature and passed measures to disfranchise the blacks, which essentially lasted until after the passage of civil rights legislation in the mid-1960s.

By the late 1870s, hardship was experienced by everyone.

" By the early 1870s water diversions were being used to irrigate an extensive area of corn and other crops.

By the early 1870s, what was referred to as " North Arkansas College " ( not to be confused with the modern community college by the same name in Harrison, Arkansas ) was founded and students from all over the state attended.

By the late 1870s, Springville was large enough to warrant a post office, but there already existed a town called Springville, California ( now part of Camarillo, in Ventura County ) in the state of California.