140. Directions. (A) Place E S upon a flat, uncovered, wooden table, and rub it vigorously for a minute with the warm flannel, F C, to thoroughly charge it. Do not let E S slide about, and do not lift it from the table.

(B) With the right hand grasp E R at its extreme end, and place E C upon E S.

(C) Touch E C for an instant with a finger of your left hand ([Fig. 35]).

(D) Remove your finger entirely from E C, then lift E C by its insulating handle, E R, at the same time holding E S down to the table, if it tries to follow E C.

Fig. 35.

Fig. 36.

(E) Bring your left hand near E C ([Fig. 36]). You should get a good spark from E C.

(F) It is not necessary to immediately rub E S again. You have discharged E C by taking a spark from it. To recharge it, simply place it upon E S again; let it remain there while you count 5; touch it as before, and then lift by E R.