How to make the treble perpendicular glasse:
Heading added, "How to make the treble perpendicular glasse."
A Water-clock, or a Glasse shewing the houre of the day:
'K, G, G' changed to 'E, F, G,' "the length of the glasse E, F, G"
Second Booke
A Receipt of a Composition that will kindle with the water:
'limekill' changed to 'limekiln,' "set it in a limekiln"
Second "Another." heading added.
How to make Balloones, also the morter Peece to discharge them:
Full stop and comma exchanged, "with its portfire, O."