The Sphere of the World (De Sphaera)

The question remains why the water here is not aqua mirabilis miraculous water, and why it moves. It seems to be on account of fish? and salt. For where water is salty, it is not governed; and it moves, that is to say, into the abysses, just as the Indian Sea, the Mediterranean Sea, the Arabian Sea, and the ferrous? sea—both double and fish-filled?. But he who wishes to conclude this for that cause says in the fourth of these summer? [texts] that it always moves here and there; he who had pointed out this place indicates that it would be, that is, he says below, that in some places? it would have been in saline earth.

That the earth is round is shown here: for if it were not, its places would be straight [and] ours?, because elsewhere they are not shown to be round; this is for another reason.
Because the surface of the earth is indeed round, it is round.
Thus, in an eclipse of the moon, the shadow of the sun's rays falls upon it, and the curvature? of the earth is [apparent].

An oval library stamp tilted diagonally, containing the text "From the Library of the Royal [Collection]."