increases from Thurston shows that silk has great strength and light- the summit of Blue Hill, 640 feet above sea.level, fif- teen tissue paper kites, to be flown with: silk thread ness. belonging to the Smithsonian Institution... My -object rarefied air support a series. of tandem - was to reach… … feet .above sea level, or 1,400 feet above. and if released they float with and are the hill. surrounded by the same air, and so fail It brought down a record of 6° colder to record progressive changes above a than at the earth’s surface. The instru- local point. Flying motors: would serve ment was…
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