'grinstone' changed to 'grindstone,' "under a grindstone, into"

Experiments of forcing water by ayer compressed:

'hol' and 'low' joined, "a round hollow ball"

Experiments of forcing water by Engins:

Full stop added after 'side,' "from it on the side. Having thus"

Experiments of producing sounds by Engins:

'de-' struck from 'de-desired,' "to expresse your desired tune"

Second 'it' struck, "it will play upon the bels"

How to make the double perpendicular glasse:

Second 'the' struck, "it will suck up the water"