Inductive elementary physical science with inexpensive apparatus, and without laboratory equipment (1897)
Bailey, Frederick H. (Frederick Harold), 1865- · Boston, D. C. Heath & Co. · leaf 69
ert the tubeinto the bottom hole of the Appa-ratus from the mouth. Push itthrough carefully, so as not toopen the slit till you can seizethe end below, and draw it therest of the way. Connect theother valve, slit downward, tothe Apparatus as illustrated,and tie the sheet rubber overthe mouth. Seize… … Exp. 45. Am EXPERIMENTS. 35 Exp. 46. This experiment illustrates how we breathe.The Apparatus represents the chest cavity; the rubber bal-loon, the lungs. Alternately pull outand push in the centre of the sheetrubber tied over the mouth of theApparatus. Of course in our bodiesthere is no such space…
Physics
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