Crossword-Solution: BUBLE 5 letters, 7 clues 🏆 scrabble score: 9

She was in general a fairly good speller, but certain words, especially those in which there was a question of doubling or not doubling a letter, gave her trouble: untill (though occasionally she deleted the final _l_ or wrote the word correctly), agreable, occured, confering, buble, meaness, receeded, as well as hopless, lonly, seperate, extactic, sacrifise, desart, and words ending in -ance or -ence.

And this would continue sometimes many daies together, if the Air so long retain'd the same measure of gravity; and then (upon other changes) the Buble would regain an _æquilibrium_, or a preponderance; so that I had oftentimes the satisfaction, by looking first upon the _Statical_ Baroscope (as for distinctions sake it may be call'd) to foretell, whether in the _Mercurial_ Baroscope the Liquor were high or low.

That, though the Glass-buble, and the Glass-counterpoise, at the time of their first being weigh'd, be in the Air, wherein they both are weigh'd, exactly of the same weight; yet they are nothing near of the same bulk; the Buble, by reason of its capacious cavity (which contains nothing but Air, or something that weighs less than Air) being perhaps a hundred or two hundred times (for I have not conveniency to measure them) bigger than the Metalline counterpoise.

This _Statical_ Baroscope will oftentimes be more parable, than the other: For many will finde it more easie, to procure a good pair of Gold-scales, and a Buble or two, than a long Cane seal'd, a quantity of _Quick-silver_, and all the other requisits of the _Mercurial_ Baroscope; especially if we comprise the trouble and skill, that is requisite to free the deserted part of the Tube from Air.

And if the Ballance be accommodated with a divided Arch, or a Wheel and Index, these Observations will assist you for the future to determine readily, by seeing the inclination of the Cock or the degree mark'd by the Index, what pollency the Buble hath, by the change of the _Atmospheres_ weight, acquired or lost.