Phoceeoings Am. Philos. Soc. Vol. LIII. No. 215 



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Electrocardiogram from a dog. The upper curve taken during stimulation (signal above) of the right vagus nerve. The lower curve taken during stimulation of the left vagus nerve. Divisions of the 

 ordinates are o.i millivolt; of the abscissae, 0.04 seconds. 



