-headed Funnels, 57.
Traps, Air, 69.
Tube, Combustion, how to work it, 25.
Tubes. _See_ Glass Tubes.
---- T-, 41.
---- U-, 56.
Turpentine, Camphorated, for Grinding, 11.

U-Tubes, 56.

Vacuum Taps, 65-68.
---- Tube, To Make a, 60.
Vitreous Silica, Apparatus required for Making, 89.
---- Behaviour under sudden changes of Temperature, 87.
---- Bulbs, etc., Making Joints on, 93.
---- Expansion of, 86.
---- Hardness of, 85.
---- Insulating Power of, 85.
---- Melting Point of, 85.
---- Permeability to Gases, 87.
---- Properties of, 84.
---- Rods, Making Joints on, 94.
---- Tubes, Method of Making, 90.
---- Tubes, Making Joints on, 94.

Welding or Soldering Tubes together, 39, 62.
White Enamel, Uses of, 39, 56.
Widening the Ends of Tubes, 36.
Working-place, 2.

Printed by T. and A. CONSTABLE, Printers to His Majesty
at the Edinburgh University Press, Scotland

End of the Project Gutenberg EBook of The Methods of Glass Blowing and of
Working Silica in the Oxy-Gas Flame, by W. A. Shenstone

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