The Boy's Playbook of Science / Including the Various Manipulations and Arrangements of Chemical and Philosophical Apparatus Required for the Successful Performance of Scientific Experiments in Illustration of the Elementary Branches of Chemistry and Natural Philosophy

by John Henry Pepper

Fourth Experiment.

Remove the break. Attach two wires to x x (Fig. 226). Hold them so as at pleasure to complete and interrupt the galvanic circle. Two other wires are attached at p p, their ends being about three-quarters of an inch asunder. When the current is closed or broken at a a, a spark passes between b b. (Fig. 226.)

Fig. 226.

The making and breaking of the circuit.

Fifth Experiment.

A Leyden jar may be charged and discharged with singular rapidity when connected with the coil, and the snapping noise is so rapid, that it produces a continuous sharp sound. (Fig. 227.) If a piece of paper is held between the ball of the Leyden jar and the wire, it is instantly perforated, but not set on fire.

Fig. 227.