Blake's Burden by Harold Bindloss

Dusk was falling on the broad river, and the bold ridge behind the city stood out sharp and black against a fading gleam in the western sky, when Richard Blake hurried along the wharf. Close at hand a big, sidewheel steamer, spotlessly white, with tiers of decks that towered above the sheds and blazed with light, was receiving the last of her passengers, and on reaching the gangway Blake stood aside to let an elderly lady pass. She was followed by her maid and a girl whose face he could not see. It was a few minutes after the sailing time, and as the lady stepped on board a rope fell with a splash. There was a shout of warning as the bows, caught by the current, began to swing out into the stream, and the end of the gangway slipped along the edge of the wharf. It threatened to fall into the river, the girl was not on board yet, and Blake leaped upon the plank. Seizing her shoulder, he drove her forward until a seaman, reaching out, drew her safe on deck.

Then the paddles splashed and as the boat forged out into the stream, the girl turned and thanked Blake. He could not see her clearly, because an over-arching deck cast a shadow upon her face.