A text-book on chemistry. For the use of schools and colleges (1866)
Draper, Henry, 1837-1882 · New York, Harper & brothers · leaf 203
In Fig. 159 the muscular contractions that are ex-Fig. 169. hibited by the tongue of an ox when a current is passed throughit are shown. The tongue isdrawn out, and a nail driventhrough it into the table. Onbringing one pole of the batteryFig. ito. … in connection with the tip ofthe tongue, and the other polein connection with the spinalcord, the tongue contracts,and either the nail is drawnout or the head pulled for-ward. Fig. 170 shows the mannerin which, when the thighs ofa frog have been excited, theymay be caused to produce in-duced…
Chemistry · Physics
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