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— — — — ■ M | i, i I ,, r,,, ^ i „n i „^ 
IV. Experiment touching the Weighing of ‘Bodies 
of the Janie Species^ hut of yery unequal Surfaces^ 
in Common Water ^ heing of an equal Weight m Lom^ 
mon Air. By Mr. Fr. Hauksbee, F. 5.- 
I Took a Piece of Sheet-Brafs (which I take to be more 
dole and folid than that which is cafi:^ of an exad 
Square Inch, weighing juft 48 2 Grains. I then cut as 
many Square Inches of Brafs Tincel, as were equal to 
the fame weight : The Number of thefe Square Inches 
were 255. Now thefe being of an equal weight with 
the other fihgle piece in Common Air, I concluded from 
the inequality of their Surfaces, that a confiderable dif- 
proportion in their Specifick Gravities would enfue, by 
weighing them in Water ; the Water in one touching 
fo many Parts of the Superficies more than in the other : 
And twas from what is generally all'erted, That the 
fmaller Bodies are, fo the Difproportions of their Bulks 
to their Superfic^ies encreafe ; and that luppofing them 
infinitely fmall, or as Gold dilfolv’d in Aqua. Regis^ or 
Silver in Aqua Fortis muft be, then their Superficies be- 
ing touch’d by fo many Parts by the including Men- 
flruum^ which is in fuch a Difproportion to their Dia- 
meters or Bulks of Matter, as difpofes them to remain 
fufpended in it. This I take to be the General Solution 
of that Phenomenon ; and ’twas thefe Confiderations 
that gave Birth to this Experiment. Yet when I came 
to bring it to the Teft, I found, to my great furprize, 
f being prepoifefs’d on the contrary^ but two Grains 
difference, thefingle Piece weigh’d in the Water about 
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