348 DRY-FARMING 
profitable to carry water to the garden in cement or 
iron pipes so that no water may be lost by seepage 
or evaporation during the conveyance of the water 
from the reservoir to the garden. It is also often 
desirable to convey water to plants through pipes 
laid under the ground, perforated at various intervals 
to allow the water to escape and soak into the soil 
in the neighborhood of the plant roots. All such 
refined methods of irrigation should be carefully 
investigated by the farmer who wants the largest 
results from his limited water supply. Though such 
methods may seem cumbersome and expensive at 
first, yet they will be found, if properly arranged, 
to be almost automatic in their operation and also 
very profitable. — 
Forbes has reported a most interesting experiment 
dealing with the economical use of a small water 
supply under the long season and intense water dis- 
sipating conditions of Arizona. The source of supply 
was a well, 90 feet deep. A 3- by 14-inch pump 
cylinder operated by a 12-foot geared windmill 
lifted the water into a 5000-gallon storage reservoir 
standing on a support 18 feet high. The water was 
conveyed from this reservoir through black iron pipes 
buried 1 or 2 feet from the trees to be watered. 
Small holes in the pipe 3‘; inch in diameter allowed 
the water to escape at desirable intervals. This 
irrigation plant was under expert observation for 
considerable time, and it was found to furnish suffi- 
