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Show PaorESSOB Stels's Lectl s.r. Professor Stein lectured last night, in the Methodist church, on the "Physical "Phy-sical Properties of the Atmosphere." His subject was ably handled, and the experiments shown by aid of appropriate appropri-ate apparatus were very successful and conclusive. The weight of the air was ; shown by weighing a hello w sphere I fi led with atmospheie, and afterwards weighing the same Epbere after the 1 atmosphere had b en cshitu-ted; the 1 different in the weigh;? Uitg quite J ippartnf. Ihe fcla.-iicnv uf the aiims-pbere aiims-pbere and it upward add downward pressure were alo ij.u-tratid by experiments. ex-periments. The water-hammer was exhibited tc the wonder t f th? juve-ni'en, juve-ni'en, as also was )he guinea atd feather experiment, showing a cusnta and a ftatber falline with equal velocities veloci-ties in a vacuum. The last experiment of the lecture proved conciuive!j ihal sound cpmd not he produced in a vacuum. vacu-um. An alarm clock, in full blast, was placed under a giasa jar, and ihe air gradually xhaus:ed. As the air was being drawn out the clangor of the alarm bell continued to grow fainter j and fainter, until it entirely oeased to be audible, though the alarm could be seen in full play under the glass jar. The lecture was very successful. |