Ruth and Gladys clutched the upturned boat and, clung there screaming.

Mrs.Arnold was in even more desperate straits.

She could not swim, and she had fallen too wide of the boat to be able to grasp it.

The few patrols left in charge of the camp stood for a moment paralysed, then tore along the side of the lake towards the scene of the accident.

But someone else was quicker.