At last, the boat drifting stern foremost, a torrent of water struck Annie, and tumbled into the boat as if it would beat out the bottom of it.

Annie was tossed about in fierce waters, and ceased to know anything.

When she came to herself, she was in an unknown bed, with the face of Mrs Forbes bending anxiously over her.

She would have risen, but Mrs Forbes told her to lie still, which indeed Annie found much more pleasant.
As soon as they got under the fall the boat had filled and foundered.
Alec and Curly could swim like otters, and were out of the pool at once.

As they went down, Alec had made a plunge to lay hold of Annie, but had missed her.