Fig. 1.-SIMPLE WAY OF SHOWINGTHE DIFFUSION OF GASES. Fig. 2.-PRESSURE BY ENDOSMOSE. Fig. 3.-PARTIAL VACUUM BY EXOSMOSE. Fig. 4.-END0SM0METER. A good way to insure a tight joint is to stretch a widerubber band around the neck of the globe before ap-plying the membrane. The large fish globe is…
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