Then there was an instant's struggle.

It was Mrs.Falchion's life now, as well as Amshar's.

They swayed.

They hung on the edge of the rocky chasm.

Then we lost the gleam of the knife, and the Arab shivered, and toppled over.
Mrs.Falchion would have gone with him, but Amshar caught her about the waist, and saved her from the fall which would have killed her as certainly as it killed the Arab lying at the bottom of the tank.