Word: calendar
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Dates: during 1950-1959
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Yale will abandon its short-lived calendar experiment next year and return to the traditional mid-January examinations, and four day Thanksgiving weekend...
...strength of reports through late October, the Public Health Service predicted last week that the 1955 U.S. polio epidemic will prove to have been the lightest in four years. So far reported: 25,727 cases v. 33,078 for the same period in 1954. Projecting to the calendar year's end.* PHS foresaw a total of about 29,000 cases-in the same range as 1951's low tally of 28,386. Equally encouraging: the polio mortality rate in 1955 is expected to be the lowest in several years, with 750 to 800 deaths v. 1,500 last...
...disease year" ends when there are fewest cases, at the end of March. The 1955-56 disease-year figures will show the same trend as the calendar year, differ only in percentage-point details...
...teach his young readers their algebra, but to show how man built up his world of signs and symbols to solve the problems of his everyday existence and then to expand his civilization. He starts with the sun and the moon, man's first clocks and calendars, and with the notches that the shepherd cut when counting his flock. Then come the calendar keepers, the powerful group who could tell people when to plant crops. Later men developed more complicated desires. The farmer wanted to know how much land he had, the sailor what course to plot, the priest...
...Dash. To keep track of the seasons, the calendar makers had to have records, and this meant a system of written numbers. Of all these early systems, the most efficient was that of the Mayans, who used only three symbols-a dot (1), a dash (5), and an oval that could multiply each number 20 times. Meanwhile, other civilizations had other inventions. The Egyptians had to find ways to make a right angle so that the base of each pyramid would be an absolute square; they also had to find out how to measure land for taxes. Thus emerged their...