Fear . eheart-beats being nearer to each other in the ascendingportion of the curve, and further apart in the lowerportion which corresponds to the end of each expira-tion. While the animal was perfectly quiet I motioned tomy servant to fire a gun, but he failed. It was an oldhunting-gun, badly loaded perhaps, and only the car-tridge had caught fire. The dog, however, at oncetried to rise, and became strangely excited, much toour surprise. I had my hands on the instrumentwhich lay on the ribs where the heart beats, and feltthat its palpitations had become stronger and morerapid. About a minute
Fear . eheart-beats being nearer to each other in the ascendingportion of the curve, and further apart in the lowerportion which corresponds to the end of each expira-tion. While the animal was perfectly quiet I motioned tomy servant to fire a gun, but he failed. It was an oldhunting-gun, badly loaded perhaps, and only the car-tridge had caught fire. The dog, however, at oncetried to rise, and became strangely excited, much toour surprise. I had my hands on the instrumentwhich lay on the ribs where the heart beats, and feltthat its palpitations had become stronger and morerapid. About a minute later we succeeded in takingthe curve B in fig. 4, from which may be seen how THE BEATING OF THE HEART I I I much more frequent the pulsations were. The animalhad become so restless that we had to give up theexperiment and set him at liberty. When he was onthe ground he went round the laboratory sniffingeverywhere. Presently we took the curve C, fig. 4,from which we can see that the emotion was not yet. Fig. 4.—Cabdiac Pulsation during Emotion over, since the beating of the heart is still quicker thanin the normal curve marked in fig. 3. There were several of us together when this ex-periment was made—the students of the laboratory,my assistants, and Professor Corona, and we were allastonished at what took place. Some of the by-standers said at once that it must be a hound. We I 12 FEAR had always taken him for a watch-dog, as he was verybig, and did not look in the least like a hound. Wedetermined to try a decisive experiment the next day. We waited till the animal was perfectly quiet, andthen held a gun so that he could see it at a distance ofa few steps from him, without threatening him in anyway. The dog at once recognised the weapon, and
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