Word: dustless
(lookup in dictionary)
(lookup stats)
Dates: during 1930-1939
Sort By: most recent first
(reverse)
...either Mt. Sinai or, according to another tradition, Mount St. Catherine twelve miles to the south. St. Catherine is the higher. It is the highest (8,540 ft.) peak, the point nearest the Sun in the rocky Sinai Peninsula. For that reason-and because the atmosphere thereabouts is almost dustless, almost hazeless-rather than for holy associations, the Smithsonian Institution decided that the top of St. Catherine was the best accessible place in the entire Eastern Hemisphere for a solar observatory. Secretary Charles Greeley Abbot last week announced that building will start at once...
...proper kind of inkwell, the scientific height and slope for a desk, a dustless chalk, a shineless blackboard, hygienic methods of ventilation-these school details and many another have been well thought out. But punishment is still crude, unscientific, oldfashioned. You cane one child, thwack another, smack a third. Why should chastisement not be up-to-date, simple, exact? So ran the musings of a smart Australian pedagog. Last week the startled Ministry of Education in Sydney received, and began to ponder, a strange result of his thoughts: a contraption of many wheels, dials, weights, levers, by which a cane...