t of hollow brass hemispheres, as shown in Fig. 2. filled with air, water, or some other liquid, constituted lever fastened to one of the legs of the tripod. The piston The two hemispheres were pressed together and attached to one of the experimental proofs of the theory of the , was provided with… … on scientific matters. His attention being first called to the nearly as possible complete, they are suspended under a glass Fig. 1.-0II0 VON OUEBICKE S OBIOIKAL AIB FUKP. problem of creating an entirely cm])ty space by a treatise on bell, in which a vacuum is then also created. As soon as that…
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