Now, for the first time, Nell felt herself borne along with a gliding movement, like that of a balloon through the air.

The water was smooth as a lake, and Nell reclined in the stern of the boat, enjoying its gentle rocking.
Occasionally the effect of the moonlight on the waters was as though the boat sailed across a glittering silver field.

Little wavelets rippled along the banks.

It was enchanting.
At length Nell was overcome with drowsiness, her eyelids drooped, her head sank on Harry's shoulder--she slept.

Harry, sorry that she should miss any of the beauties of this magnificent night, would have aroused her.
"Let her sleep!" said the engineer.