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 its initial, and most deadly waves, approximately 200, 000 people were killed by the plague, and, by the 15th century, Cairo's population had been reduced to between 150, 000 and 300, 000.

During the 15th century BC, Hittite power fell into obscurity, re-emerging with the reign of Tudhaliya I from ca.

During the period of time known as the Dark Ages ( 5th – 15th century ), Arabic scholars and scientists progressed science and technology while Europe was in cultural decline and poverty.

During the first three-quarters of the 15th century, for example, fifteen mais occupied the throne.

During the rule of the 15th Kirata King Jinghri, another religious doctrine, Jainism, was being preached by Mahavir in India.

During the 15th century Oyo and Benin surpassed Ife as political and economic powers, although Ife preserved its status as a religious center.

During the 15th century, sentiment in Europe increasingly turned against the enslavement of Christians and the Church denounced such practices, but this did not extend to unbelievers.

During the 15th century the sound of full triads became common, and towards the end of the 16th century the system of church modes began to break down entirely, giving way to the functional tonality which was to dominate western art music for the next three centuries.

During the 15th century there was a division of instruments into Haut ( loud, outdoor instruments ) and Bas ( quieter, more intimate instruments ) Only two groups of instruments could play freely in both types of ensembles: the Cornett and sackbut and the Tabor and tambourine.

During the 15th century, China's Ming Dynasty assembled one of the largest and most powerful naval fleet in the world for the diplomatic and power projection voyages of Zheng He.

During the 15th century, many travelers ' inns, such as Kapan An and Suli An, were established in the town.

During the 15th and 16th centuries, a new intensive form of Talmud study arose.

During the 15th and 16th centuries, Portugal was a leading European power, ranking with England, France and Spain in terms of economic, political, and cultural influence.

During the reign of Ercole d ' Este I, one of the most significant patrons of the arts in late 15th and early 16th century Italy after the Medici, Ferrara grew into a cultural center, renowned for music as well as for visual arts.

During the 15th, 16th and 17th centuries, these weapons, both mounted and unmounted, were so effective that lancers and pike men not only became a staple of every Western army, but also became highly sought-after mercenaries.

During the 15th century, " piracy became an increasing problem and merchant communities such as Bristol began to resort to self-help, arming and equipping ships at their own expense to protect commerce.

During the 15th century, Textiles were the largest single industry.

During this period, most of the hair was braided and hidden under wimples, veils or couvrechefs, and in the later half of the 15th century and on into the 16th century, wealthy women frequently plucked out hair at their temples and the napes of their necks, or used depilatory cream to remove it, if it would otherwise be visible at the edges of their hair coverings.

During the 15th and 16th centuries, European men wore their hair cropped no longer than shoulder-length, with very fashionable men wearing bangs or fringes.

During the Middle Ages, it was first part of the Patriarchate of Aquileia, and later of Tolmin County, before being included in the Habsburg Monarchy in the 15th century, like the majority of Slovene-speaking territories.

During the 15th century the French kings continued to face threats both from the English and from the rival factions of the Burgundians and the Armagnacs.

During the 15th century, the abbey guesthouse was developed into a royal residence, and after the Scottish Reformation the Palace of Holyroodhouse was expanded further.

During the 15th century the castle was increasingly used as an arsenal and armaments factory.

During the course of the 15th century, nearly all of Angkor was abandoned, except for Angkor Wat, which remained a Buddhist shrine.