A LEYDEN JAR.
This may be made as follows: Fill a plain glass tumbler two-thirds full of shot; insert the bowl of a spoon in the shot, leaving the handle projecting. Hold the tumbler in the hand, and bring the handle of the spoon near to the electrophorus—previously prepared for action—so as to receive its spark. On repeating this a few times, the electric fluid will be accumulated in the “jar,” and the many small sparks may be obtained as one large one, by approaching the finger to the spoon, still holding the tumbler in the other hand.
This idea may be varied by using a large wide-mouthed bottle or small jar, instead of the tumbler, and covering the outside nearly up to the top with tin-foil. If that rare treasure, a bullet-mold, is to be had, a ball may be formed on the end of a stout wire, and used instead of the spoon, the end with the ball being the projecting one, thus making an article corresponding more nearly to the regular professional pattern.
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