When all farewells had been said, Mr. Clewe went on board the Go
Lightly, on the deck of which were her officers and men and the
few inhabitants of the station, and then the plate-glass
hatchways of the Dipsey were tightly closed, and she began to
sink, until she entirely disappeared below the surface of the
water, leaving above her a little floating glass globe, connected
with her by an electric wire.

As the Dipsey went under the sea, this little globe followed her
on the surface, and the Go Lightly immediately began to move
after her. This arrangement had been made, as Clewe wished to
follow the Dipsey for a time, in order to see if everything was
working properly with her. She kept on a straight course,
flashing a light into the little globe every now and then; and
finally, after meeting some floating ice, she shattered the globe
with an explosion, which was the signal agreed upon to show that
all was well, and that the Dipsey had started off alone on the
submarine voyage to the pole.

Roland Clewe gazed out over the wide stretch of dark-green waves
and glistening crests, where nothing could be seen which
indicated life except a distant, wearily-flapping sea bird, and
then, turning his back upon the pole, he made preparations for
his return voyage to New York, at which port he might expect to
receive direct news from Sammy Block and his companions.