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 his evidence, he read from the letter he had written to the Chancellor, which included the statement that a notation of paid postage could be created "… by using a bit of paper just large enough to bear the stamp, and covered at the back with a glutinous wash …".

During the Civil War, the Confederate government honored Calhoun on a one-cent postage stamp, which was printed in 1862 but was never officially released.

During his reign as the 100 metre Olympic champion, he also appeared on postage stamps and was awarded Trinidad and Tobago's highest honour, Trinity Cross, in 1978.

During the reign of King Charles II, Britannia made her first appearance on English coins on a farthing of 1672 ( see Depiction on British coinage and postage stamps below ).

During the 20th century there have been issues of bogus postage stamps bearing Staffa's name.

During the period of German control, Germany issued postage stamps for the islands ; see postage stamps and postal history of the Caroline Islands for more details.

During its time as a French colony, Obock issued its own postage stamps ; for more detail see Postage stamps and postal history of Obock.

During this period they carried regular mail in addition to the package business, defying the post office monopoly ; eventually a compromise was worked out wherein Wells Fargo charged its own fee on top of federal postage, in recognition of the limitations of the post office reaching all areas easily.

During his tenure at Postmaster General he shifted the postal service from a collect on delivery postage delivery system to a prepaid postal delivery system by introducing the postage stamp in 1847.

During the 1860s, the postal authorities became concerned about postage stamp reuse.

During most of the Italian period, postage stamps of Italy were used.

During the five months between the US Post office's withdrawal of services from the seceded states and the first issue of Confederate postage stamps, postmasters throughout the Confederacy used temporary substitutes for postal payment.

During this brief span, the Confederate Post Office contracted with five different printing companies to produce postage stamps: Archer & Daly of Richmond, Virginia ; Hoyer & Ludwig of Richmond, Virginia ; J. T.

During June – August 1906, the government proposed quadrupling the postage rate for second-class mail, which included newspapers, from one cent to four cents per pound.

During its time as a French colony, Obock issued its own postage stamps.

During the SER centenary celebrations in 1987, set of four postage stamps were released.

During this period of Greek control, which lasted until the German invasion of April 1941, the overprint ΕΛΛΗΝΙΚΗ ΔΙΟIΚΗΣΙΣ ( Hellenic Administration ) in black or carmine was applied to Greek definitive issues, airmail stamps, postage due stamps and charity stamps.

During the Civil War Centennial, the United States Post Office issued five postage stamps commemorating the 100th anniversaries of famous battles, as they occurred over a four year period, beginning with the Battle of Fort Sumter Centennial issue of 1961.

During the Civil War, the " Black Jack " was supposed to have been favored by both North and South, but as soon as the South got news of the North making a stamp depicting one of their own heroes, they printed a 2-Cent stamp depicting the same portrait of Jackson on their own ' Red Jack ' postage stamp of their own in reaction.

( During the 1950s, publishers would frequently change comic title names to save money on second-class postage.

During the 1960s, the region had its own postage stamps.

During his 18-year term, he served as Chairman of the Committee on Ways and Means ( Thirty-Fifth Congress ) and came to be regarded as a champion of government bounties to soldiers, aid to railroads, and inexpensive postage.