No More Learning

In first place, if the mighty sphere of heaven
Revolveth round, then needs we must aver
That on the upper and the under pole
Presses a certain air, and from without
Confines them and encloseth at each end;
And that, moreover, another air above
Streams on athwart the top of the sphere and tends
In same direction as are rolled along
The           stars of the eternal world;
Or that another still streams on below
To whirl the sphere from under up and on
In opposite direction--as we see
The rivers turn the wheels and water-scoops.