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 a time of La Niña, drought plagues the coastal regions of Peru and Chile.

During the times of drought there wasn't enough water to make gazpacho.

During the Younger Dryas period of cold and drought, permanent habitation of any one location was not possible.

During the years between drought, good rains brought bumper crops to market.

During the Dust Bowl and Great Depression of the 1930s, large numbers of people fled rural areas of the Plains and Midwest because of depressed commodity prices, high debt load, and several years of drought and large dust storms.

During the dry season, drought plagues the island's central interior.

During the cold season, drought, or rainy nights, a sugar glider's activity is reduced.

During the summer of 2006, a severe drought caused the Iguazu River to become diminished, reducing the amount of water flowing over the falls to until early December.

During the drought of the 1930s, without natural anchors to keep the soil in place, it dried, turned to dust, and blew away eastward and southward in large dark clouds.

During this playoff drought, instability in the front office mirrored the Islanders ' substandard performance on the ice.

During the time of the Great Frost, a particularly cold spring drought in 1740 made it difficult to raise enough cattle for food or work.

During the warmest months, April through June, drought is a chronic problem with little rainfall until July when the rainy season begins.

During the La Niña season, rainfall averages 4 inches or below, causing drought problems during summer.

During the 1980s Edina survived economic distress, drought and a consequent crisis in water supply, decline in population, and the loss of its railroad.

During the summer of 2011, the City received national attention due to its aging water utility system and complications resulting from the severe Texas drought of 2011.

During his time as Taipei's mayor, Ma had many conflicts with the central government over matters such as health insurance rates and control of the water supply during the drought.

During the 1979-83 drought, for example, the population was reduced by about 5 %.

During a drought, Mowgli and the animals gather at a shrunken river for a ' water truce ', during which Hathi the elephant tells the story of how the first tiger got his stripes.

During the period of drought known as the dirty thirties, farmland within the dry-belt, cultivated with mold-board plow and / or double disc and summer fallowed every other year, was subject to massive soil erosion.

During the 1990s botanists began experimenting with hybrids of Poa pratensis and Texas bluegrass ( P. arachnifera ), with the goal of creating a drought and heat-resistant lawn grass.

During the 19th century, drought and floods alternately struck the rice fields and farms of Korea and caused great famines.

During the devastating famine and drought, the family must flee to a large city in the south to find work.

During the Dust Bowl drought of the 1930s, the Prairie States Forest Project encouraged farmers to plant shelterbelts ( wind breaks ) made of eastern juniper throughout the Great Plains.

During the drought of 2007-2008 this canal remained navigable while much of surrounding areas were too shallow or even above the water line.