§ 100. Silver Soldering. — [*]
§ 101. On the Construction of Electrical Apparatus - Insulators. — [*]
§ 102. Sulphur. — [*]
§ 103. Fused Quartz. — [*]
§ 104. Glass. — [*]
§ 105. Ebonite or Hard Rubber. — [*]
§ 106. Mica. — [*]
§ 107. Use of Mica in Condensers. — [*]
§ 108. Micanite. — [*]
§ 109. Celluloid. — [*]