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. The medical and surgical uses of electricity : including the X-ray, Finsen light, vibratory therapeutics, and high-frequency currents . NdeSs^ Fig. 140. Fig. 141. Einhorns Gastrodiaphane for Transillumination of the Stomach. rest there is no change in the current. In connecting the ticker withthe battery and the ball, each motion of the latter will be recorded on thepaper in showing the breaks and makes of the current. If the ball is swallowed and brought into the stomach, the motions of 444 ELECTRO-THERAPEUTICS. it—which are caused by the active and passive motions of the stomach—•can be recorded in the same way as described. The gastrodiaphane (Figs, 140, 141) consists of a soft-rubber tube, atthe end of which is fastened an Edison lamp of hard glass by means of asmall metal mounting; conducting wires run to the battery; at some dis-tance from the rubber tube there is a current-interrupter. The insertionof this apparatus into the stomach is no more difficult than that of theordinary tube alone. The patient, in a fasting condition, drinks one totwo glasses of water, and thereupon the apparatus, lubricated with