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 Achaemenid Persian Empire, around 600 BC the Persians first began to use the abacus.

During the Achaemenid period, Sogdiana and Bactria were part of the Persian empire.

During the Achaemenid period, Khwarezm was governed by Smerdis / Bardiya along with Bactriana, Carmania, and the other eastern provinces of the empire.

During the Achaemenid era, especially at the time of Cyrus the Great, the Persian imperial flag was square in shape, divided kite-like into four equal triangles alternating between two colors.

During the late Achaemenid era, adar — as the quintessence of the Yazata Adar — was incorporated in the Zoroastrian hierarchy of angels.

During this persecution many bishops were exiled to the other ends of the Empire, ( e. g., St Hilary of Poitiers to the Eastern provinces ).

During Alexius II's reign, the Byzantine Empire was invaded by King Bela III losing Syrmia and Bosnia to the Kingdom of Hungary in AD 1181, later even Dalmatia was lost to the Venetians.

During his reign, Jerusalem became more closely allied with the Byzantine Empire, and the two states launched an unsuccessful invasion of Egypt.

During the first invasion, Thrace, Macedon and the Aegean Islands were added to the Persian Empire, and Eretria was duly destroyed.

* Mann, Horace, K. The Lives of the Popes in the Early Middle Ages, Vol III: The Popes During the Carolingian Empire, 858 – 891.

During his reign, Bayezid II consolidated the Ottoman Empire and thwarted a Safavid rebellion soon before abdicating his throne to his son, Selim I.

During the days of the Roman Empire, the settlement of Augusta Raurica was founded 10 or 20 kilometres upstream of present Basel, and a castle was built on the hill overlooking the river where the Basel Münster now stands.

During the Roman Empire, Roman concrete ( or opus caementicium ) was made from quicklime, pozzolana and an aggregate of pumice.

During most of the colonial period, Costa Rica was the southernmost province of the Captaincy General of Guatemala, which was nominally part of the Viceroyalty of New Spain ( i. e., Mexico ), but which in practice operated as a largely autonomous entity within the Spanish Empire.

During his reign the Empire conquered Thrace, Noricum, Pamphylia, Lycia and Judaea, and began the conquest of Britain.

During his reign, the Empire annexed the Kingdom of Mauretania and made it into a province.

During the Spanish Empire, approximately 550, 000 Spanish settlers migrated to Latin America.

During the American Civil War ( 1861 – 1865 ), the Union feared that the seceded Confederate States of America ( CSA ) would plan a northerly attack from Canada, which was still owned by the British Empire and remained neutral in the war.

During the Roman Empire, legionaries were issued a pugio ( from the Latin pugnō, or “ fight ”), a double-edged iron thrusting dagger with a blade of 7-12 inches.

During his reign, he also set about creating the Second Mexican Empire ( headed by his choice of Maximilian I of Mexico, a member of the House of Habsburg ), to regain France's hold in the Americas and to achieve greatness for the ' Latin ' race.

During the rule of Henry VIII an Act of Parliament declared that ' this realm of England is an Empire ... governed by one Supreme Head and King having the dignity and royal estate of the imperial Crown of the same '.

During the Siege of Paris in 1871, the North German Confederation, supported by its allies from southern Germany, formed the German Empire with the proclamation of the Prussian king Wilhelm I as German Emperor in the Hall of Mirrors at the Palace of Versailles, to the humiliation of the French, who ceased to resist only days later.

During the history of the Byzantine Empire, the Greek peninsula was occasionally invaded by the foreign peoples like Goths, Avars, Slavs, Normans, Franks and other Romance-speaking peoples who had betrayed the Crusades.

During the last years of the Russian Empire, in the early 20th century, many authors continued to write in the gothic fiction genre, including historian and historical fiction writer Alexander Valentinovich Amfiteatrov, Leonid Nikolaievich Andreyev, who developed psychological characterization, symbolist Valery Yakovlevich Bryusov, Alexander Grin, Anton Pavlovich Chekhov and Aleksandr Ivanovich Kuprin.

During its 47 years of existence, the German Empire operated as an industrial, technological and scientific giant, receiving more Nobel Prizes in science than Britain, France, Russia and the United States combined.

During the Thirty Years ' War, George William tried to remain neutral between the Roman Catholic forces of the Holy Roman Empire and the Protestant principalities.

During the later years of the Roman Empire, the Germanic peoples of northern Europe grew in strength to rival the Empire itself, and repeated organized attacks led to the Fall of the Western Roman Empire in AD 476, a date which traditionally marks the end of the classical period, and the start of the middle ages.