The experimenter having taken care during this experiment to place the
bobbin quite near the horse's ear, so that he could hear the humming
of the interrupter, undertook a second experiment in the following
way: Having detached the conductors from the armature, he placed
himself in front of the horse (as shown in Fig. 2), and began to
imitate the humming sound of the interrupter with his mouth. The
animal at once assumed the stupefied position that the action of the
current gave him in the first experiment, and allowed his feet to be
lifted and shod without his even being held by the snaffle.
The horse was for ever after subdued, and yet his viciousness and his
repugnance to shoeing were such that he could only be shod previously
by confining his legs with a kicking-strap.
It should be noted that the action of the induction coil, mounted as
this was, was very feeble and not very painful; and yet it was very
disagreeable in the mouth, and gave in this case a shock with a
sensation of light before the eyes, as we have found by experimenting
upon ourselves.
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