Art.
194. Application to two cases of the flow of electricity in a conducting sheet
195. Application to two cases of electrical induction
196. Capacity of a condenser consisting of a circular disk between two infinite planes
197. Case of a series of equidistant planes cut off by a plane at right angles to them
198. Case of a furrowed surface
199. Case of a single straight groove
200. Modification of the results when the groove is circular
201. Application to Sir W. Thomson's guard-ring
202. Case of two parallel plates cut off by a perpendicular plane. (Fig. XII)
203. Case of a grating of parallel wires. (Fig. XIII)
204. Case of a single electrified wire transformed into that of the grating
205. The grating used as a shield to protect a body from electrical influence
206. Method of approximation applied to the case of the grating
Chapter XIII.
Electrostatic Instruments.
207. The frictional electrical machine
208. The electrophorus of Volta
209. Production of electrification by mechanical work.—Nicholson's Revolving Doubler
210. Principle of Varley's and Thomson's electrical machines
211. Thomson's water-dropping machine
212. Holtz's electrical machine
213. Theory of regenerators applied to electrical machines
214. On electrometers and electroscopes. Indicating instruments and null methods. Difference between registration and measurement
215. Coulomb's Torsion Balance for measuring charges
216. Electrometers for measuring potentials. Snow Harris's and Thomson's
217. Principle of the guard-ring. Thomson's Absolute Electrometer
218. Heterostatic method
219. Self-acting electrometers.—Thomson's Quadrant Electrometer
220. Measurement of the electric potential of a small body
221. Measurement of the potential at a point in the air