His external balloon, which had the dimensions given above, contained a less one of the same shape, which was only forty-five feet in horizontal, and sixty-eight feet in vertical diameter.
The car, which was of a circular form and fifteen feet in diameter, was made of wicker-work, strengthened with a slight covering of iron, and protected below by a system of elastic springs, to deaden the shock of collision.
One of 48,000 times, which should bring the moon within an apparent distance of five miles; and, in order to be visible, objects need not have a diameter of more than nine feet.
Maston, "our projectile need not be more than nine feet in diameter.
At the centre of the island there is a chasm about fifty yards in diameter, whence the astronomers descend into a large dome, which is therefore called FLANDONA GAGNOLE, or the astronomer's cave, situated at the depth of a hundred yards beneath the upper surface of the adamant.
They have likewise discovered two lesser stars, or satellites, which revolve about Mars; whereof the innermost is distant from the centre of the primary planet exactly three of his diameters, and the outermost, five; the former revolves in the space of ten hours, and the latter in twenty-one and a half; so that the squares of their periodical times are very near in the same proportion with the cubes of their distance from the centre of Mars; which evidently shows them to be governed by the same law of gravitation that influences the other heavenly bodies.
In the window opening he set small branches about an inch in diameter
both vertically and horizontally, and so woven that they formed a substantial grating that could withstand the strength of a powerful animal.
The tree was hollow to an extent of about fifty feet in diameter, and from its flat, hard floor I judged that it had often been used to domicile others before our occupancy.
It was of about the same diameter as the entrance at the foot of the tree, and opened directly upon a large flat limb, the well worn surface of which testified to its long continued use as an avenue for some creature to and from this remarkable shaft.
It was about a foot in diameter
at the big end, and he had expected to get a good saw-log, but it was so rotten as to be fit only for fuel, if for that.
There is some advantage in this; because these twin-tubs being so small they fit more readily into the boat, and do not strain it so much; whereas, the American tub, nearly three feet in diameter
and of proportionate depth, makes a rather bulky freight for a craft whose planks are but one half-inch in thickness; for the bottom of the whale-boat is like critical ice, which will bear up a considerable distributed weight, but not very much of a concentrated one.
100), and the other a figure having one side equal to the former, but oblong, consisting of a hundred numbers squared upon rational diameters
of a square (i.