the Body moved in it: (For, if so, it will save us the trouble of Observation.)
I think this can by no means be admitted. For there be many other things of Consideration herein, beside the intensive Gravity (or, as some call it, the specifick Gravity) of the Medium.
A viscous Medium shall more resist, than one more fluid, though of like intensive Gravity.
And a sharp Arrow shall bore his way more easily through the Medium, than a blunt-headed Bolt, though of equal Weight, and like intensive Gravity.
And the same Pyramid with the Point, than with the Base forward.
And many other like Varieties, intended in my ¶ 48.
But this I think may be admitted, namely, That different Mediums, equally liquid, (and other Circumstances alike,) do in such proportion resist, as is their intensive Gravity. Because there is, in such proportion, a heavier Object to be removed, by the same Force. Which is one of the things to which ¶ 33 refers.
And again: