and was almost out of sight. The multitude then began to
disperse, and Sylvia returned to her home.

Let us now follow the Callisto. The earth and Jupiter not being
exactly in opposition, as they would be if the sun, the earth,
and Jupiter were in line, with the earth between the two, but
rather as shown in the diagram, the Callisto's journey was
considerably more than 380,000,000 miles, the mean opposition
distance. As they wished to start by daylight--i. e., from the
side of the earth turned towards the sun--they could not steer
immediately for Jupiter, but were obliged to go a few hundred
miles in the direction of the sun, then change their course to
something like a tangent to the earth, and get their final right
direction in swinging near the moon, since they must be
comparatively near some material object to bring apergy into
play.

The maximum power being turned on, the projectile shot from the
earth with tremendous and rapidly increasing speed, by the
shortest course--i. e., a straight line--so that for the present
it was not necessary to steer. Until beyond the limits of the
atmosphere they kept the greatest apergetic repulsion focused on
the upper part of their cylinder, so that its point went first,
and they encountered least possible resistance. Looking through
the floor windows, therefore, the travellers had a most superb
view. The air being clear, the eastern border of North America
and the Atlantic were outlined as on a map, the blue of the ocean
and brownish colour of the land, with white snow- patches on the
elevations, being very marked. The Hudson and the Sound appeared
as clearly defined blue ribbons, and between and around the two