§ 32. To blow a bulb in the middle of a tube, [*]
§ 33. To make a side Weld. — [*]
§ 34. Inserted Joints. — [*]
§ 35. Bending Tubes. — [*]
§ 36. Spiral Tubes. — [*]
§ 37. On Auxiliary Operations on Glass:- [*]
§ 38. Boring small Holes. — [*]
§ 39. For boring large holes through thick glass sheets, [*]
§ 41. Operations depending on Grinding: Ground-in Joints. — [*]
§ 42. Use of the Lathe in Glass-working. — [*]