n the illumination of the iris can be emitted by the source of light traverse an oiled paper produced when an organ of sense is affected by sound, studied by a method which makes no change, in the before they reach the diaphragm, and form an image light, heat, or any other physical agent.… … Fig. 4.—An Experiment in Thermal Fig. 6.—Henry's Apparatus for the Study of Fig. 7.—Applying Alternating Currents In- Mental Vision. Sensation. duced by Musical Vibrations to the Body. THE CUBIOSITIES OF FEELING, HEARING, SEEING AND SMELLING. of the opening on a screen placed before the eye. By in…
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