... to illustrate atmospheric pressure and ensure a constant flow of liquid.—Translator's Note.) (Evangelista Toricelli (1608-1647), a disciple of Galileo and professor of philosophy and mathematics at Florence. His "tube" is our mercury barometer. He was the first to obtain a vacuum by means of mercury; and he also improved the microscope and the telescope.—Translator's Note.) This is the thrice-blest period when I cease to be a schoolmaster and become a schoolboy, the ... — More Hunting Wasps • J. Henri Fabre
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