The trough line was very leaky and a great deal of water splashed out of the buckets. But for all that, within a few moments our barrel was full and overflowing. We hadn't figured on its filling so rapidly, but we soon found a way of utilizing the surplus water. It was led to a half-barrel in which we washed our dishes, and from there it flowed through a ditch back to the river. The water for the wash barrel was taken from the top of the upper filter barrel. But we let the lower filter barrel flow over so that it would be kept wet on the outside. Our filter was fortunately placed at a point where a good breeze struck it, and we shoveled away the earth that had been piled around it so that the wind playing on the wet barrel evaporated the moisture, making the water inside very cool.

Fig. 260. The Water Wheel in Action.

The Water Wheel.