296. State the experiment with the tissue-paper. State that with the dancing figures. State that with the bells.
297. Describe the experiment with the tin-foil. Describe the insulating stool and the operation of it.
298. What is said of the escape of electricity from points? Describe the apparatus represented in Fig. 269, and the operation of it. What is said of the discharge of electricity from a point in a dark room? Describe the Leyden jar.
299. Explain the operation of the Leyden jar. What would be the effect of connecting the inside foil with the outer by a strip of foil? Give in full the experiment represented in Fig. 272, and the explanation.
300. What is said of the discharge of the jar? How can a large number of persons take a shock from it together?
301. Explain the effect of moisture upon the charged jar. State the experiment represented in Fig. 274.
302. What is the electrical battery? What is said of the light produced by electricity?
303. To what is the report of electricity owing? What is said of mechanical injuries caused by electricity? What of the heat caused by it? What effects may be produced by this heat?
304. What was the discovery of Franklin, and how did he make it?