Where the reservoir is but a short distance, as from a dozen to fifty yards, all that is necessary is to lay the conduit pipes on a regular uniform slope, to secure a steady uninterrupted flow of water. Owing to the friction in the pipes, and pressure of the atmosphere, the water in the fountain will of course, in no case, rise quite as high as the level of the water in the reservoir; but it will nearly as high. For example, if the reservoir is ten feet four inches high, the water in the jet will only rise ten feet, and in like proportion for the different heights. The following table* (*Stephen Switzer's Introduction to a General System of Hydrostatics.) shows with a given height of reservoirs and diameter of conduit pipes and orifices, the height to which the water will rise in the fountain.
