Q. Given a spring on a high hill, in a country of severe winters, how is it best to form a 2,000-gallon reservoir at the spring (to accumulate and to be free from pollution of anything thrown in), and to conduct the same to a tank on top of a house at a lower point?

If the reservoir is sunk, what shall it be not to rot? Will it then gather all the water readily? If above ground, what will last best, etc.? Anybody who is experienced in this line, please post me, and as to winter effects.

A. Sink a cask well tarred on the outside for a small reservoir. If it must hold 2,000 gallons, make a brick well eight feet in diameter and six feet deep, and roof it over.