§ 87. Drawing Threads by the Flame alone. — [*]
§ 88. Properties of Threads. — [*]
§ 90. On the Attachment of Quartz Fibres. — [*]
§ 91. Other Modes of soldering Quartz. — [*]
§ 92. Soldering. — [*]
§ 94. Preparing a Soldering Bit. — [*]
§ 95. Soft Soldering. — [*]
§ 97. Soldering Zinc. — [*]
§ 98. Soldering other Metals — [*]
§ 99. Brazing. [*]