CHAPTER XIV. INSTRUMENTS FOR INVESTIGATING ATMOSPHERIC ELECTRICITY.
131. ATMOSPHERIC ELECTROSCOPE.
132. VOLTA'S ELECTROMETER.
133. PELTIER'S ELECTROMETER.
134. BOHNENBERGER'S ELECTROSCOPE.
135. THOMSON'S ELECTROMETER.
136. Fundamental Facts.
137. Lightning Conductors.
138. Precautions against Lightning.