§ 13. Cleaning Glass Tubes. — [*]
§ 14. The Blow-pipe. — [*]
§ 18. The Table. — [*]
§ 19. Special Operations. — [*]
§ 20. Closing and blowing out the End of a Tube. — [*]
§ 21. To make a Weld. — [*]
§ 22. To weld two Tubes of different Sizes. — [*]
§ 24. To weld Tubes of very small Bore. — [*]
§ 30. To cut very thick Tubes. [*]
§ 31. To blow a Bulb at the End of a Tube. — [*]