"He's screwing himself up into the air.

That shows that they must either have stronger and lighter machinery than we have, or, as the astronomers have thought, this atmosphere is denser than ours, and therefore easier to fly in.

Then, of course, things are only half their earthly weight here.
"Well, whether it's peace or war, I suppose we may as well let them come and reconnoitre.

Then we shall see what kind of creatures they are.

Ah, there are a lot more of them, some coming from Brooklyn, too, as you call it.