During this precarious period of development the mother should continue to influence the growth of the child's conscience.

During the period from 1 July 1960 through 31 January 1961, additional research affiliations were effected with the U. S. Army Medical Research and Development Command to conduct research in procedures for quantitative electron microscopy, and for the study of biophysical and biological studies of the structure and function of ocular tissue.

During this period, a total of 762 exhibits were presented at 442 medical and scientific meetings.

During the period of this report, 37,470 new cases were entered into the various registries.

During this period, 7,827 teaching sets were distributed on loan.

During the period of this report, 63 panel exhibits depicting the latest developments in medical research were displayed.

During the period, the laboratory rendered centralized macropathological service to qualified requesters.

During the period from 1 July 1960 through 31 January 1961, the Medical Museum was required to move to Temporary Building `` S '' on the Mall from Chase Hall.

During the period of about 4 hours around sunset, skywave transmission conditions are building up until full nighttime conditions prevail ; ;

During the Civil War period Mr. Brown also invented the Brown & Sharpe formed tooth gear cutter, a basic invention which ultimately revolutionized the world's gear manufacturing industry by changing its basic economics.

During this period 7,484,268 members were received, yet the net membership now is only 9,910,741.

During the period of the Iberian Union ( 1580 – 1640 ), Portugal lost influence and power and made new enemies.

During the Romantic period, art came to be seen as " a special faculty of the human mind to be classified with religion and science ".< ref >

During the same period the Georgian states of Colchis and Tabal arose around the Black Sea and central Anatolia respectively.

During this same period, slave-holding border states had more free African-Americans and European immigrants than the lower South, which increased Southern fears that slavery was threatened with rapid extinction in this area.

During this period he published 18 plays and 3 novels, including the murder mystery The Red House Mystery ( 1922 ).

During this period winter sports were slowly introduced: in 1882 the first figure skating championship was held in St. Moritz, and downhill skiing became a trendy sport with English visitors early in the 20th century, as the first ski-lift was installed in 1908 above Grindelwald.

During the post-World War I period ski-lifts were built in Swiss and Austrian towns to accommodate winter visitors, but summer tourism continued to be important ; by the mid-20th century the popularity of downhill skiing increased greatly as it became more accessible and in the 1970s several new villages were built in France devoted almost exclusively to skiing, such a Les Menuires.

During the first 11 months of 2006, net imports grew by 21 percent to $ 1. 95 billion, while exports stood at $ 895 million, up 0. 3 percent from the same period in 2005.

During the first 11 months of 2006, the European Union remained Armenia's largest trading partner, accounting for 34. 4 percent of its $ 2. 85 billion commercial exchange during the 11-month period.

During January – February 2007, Armenia ’ s trade with Russia and other former Soviet republics was $ 205. 6 million ( double the amount from the same period the previous year ), making them the country ’ s number one trading partner.

During this period, spectator attendances dropped and media condemnation increased, but Simpson and Lawry flatly disregarded the public dissatisfaction.

During the Tokugawa period ( 1600 – 1868 ) the Ainu became increasingly involved in trade with Japanese who controlled the southern portion of the island that is now called Hokkaido.

During this period Agamemnon and his brother, Menelaus, took refuge with Tyndareus, King of Sparta.

During the Akkadian period, the Akkadian language became the lingua franca of the Middle East, and was officially used for administration, although the Sumerian language remained as a spoken and literary language.

During the 1930s, the silent film comedy was replaced by dialogue from film comedians such as the W. C. Fields and the Marx Brothers.

During the 19th century, Karl Marx extended the concept of materialism to elaborate a materialist conception of history centered on the roughly empirical world of human activity ( practice, including labor ) and the institutions created, reproduced, or destroyed by that activity ( see materialist conception of history ).

During one murder, scenes from the killing are interspersed with scenes from a nearby meeting of a socialist club, addressed by William Morris, where a portrait of Karl Marx comes to dominate the scene.

During late 1932 and early 1933, Groucho and Chico were also working on Flywheel, Shyster, and Flywheel, a radio show written by Nat Perrin and Arthur Sheekman ; there was even, at one time, talk of casting the two as their radio characters for the new film ( an idea that would eventually be used for the later Marx Brothers film The Big Store ).

During his convalescence he read Marx and adopted communist ideology, mainly due to the influence of the father of a nurse with whom he had developed a relationship.

During the final test match at Eden Park, Auckland on 12 September, a low-flying light plane piloted by Marx Jones and Grant Cole disrupted the final game of the tour by dropping flour-bombs on the pitch.

During the war his brother in law, Jaap van Domselaer, moves into the apartment to hide from the ' Arbeitseinsatz ' and he introduces Constant to Plato, Spinoza, Descartes, Kant, Hegel and Marx.

During the 19th century, a distant Prussian descendent of the family, Jenny von Westphalen, became the wife of the philosopher Karl Marx.

During these years, he developed a lifelong friendship and collaboration with Karl Marx.

During the " contract scene " in the Marx Brothers ' A Night at the Opera ( 1935 ), Groucho asks Chico if he knows what " duplicates " are.

During the 1920s about 100 million Marx yo-yos were sold.

During the 1960s Marx offered its Elegant Models, a collection of Matchbox-like 1930s to 1950s style race cars in red and yellow boxes.

During the 1980s, K-Line filled much the same role that Marx had in the model railroading arena, supplying similar trains at a lower price than Lionel, but with less prestige.

During the revolution Marx edited the radical journal the Neue Rheinische Zeitung.

During Debs ' time in jail, he spent much of his time reading the literature works of Karl Marx and socialist texts brought to jail by Victor L. Berger.

During the Carnival, masks and costumes of different cartoon and film characters are seen, such as Mickey Mouse, Donald Duck, Asterix, Snoopy, Groucho Marx and Zorro.

During the Hungarian Soviet Republic in 1919 the Millennium Monument was completely covered by red textile and at the basement of the obelisk a new statue was erected: Marx with a worker and a peasant.

During these disagreements, Šešelj acted from the platform of communist ideology, as his worldview at the time was very much shaped by works by Marx, Engels, and Lenin, which theorized on social justice and communist ethics.

During a radio appearance with Bob Hope in March 1947, Marx ad-libbed most of his performance after being forced to stand by in a waiting room for 40 minutes before going live on the air.

During the period between his travels, Dietzgen joined the Alliance of Communists with Karl Marx back in Germany in 1852.

During the 1980s, Gérard Houllier and Joachim Marx will succeed him.

During the Occupation of France in 1940, the Vichy government arrested Marx Dormoy, as he had refused to vote for full powers for Marshal Philippe Pétain.

During the 1860s, Ulrichs wrote to Karl Marx and sent him a number of books on Uranian ( homosexual / transgender ) emancipation, and in 1869 Marx passed one of Ulrich's books on to Engels.