A covered flume, made of 3-inch plank, laid double, 30 feet long, 4 feet wide, and 4 feet high, was placed at the bottom of the dam. On both sides stout plank wings were built, the better to receive and discharge the water, the set in the reservoir resting against the dam, that in the ditch being carefully packed in order that no water might escape.

Fitted into the end along the farm ditch was a plank gate which could be raised and lowered at will.

Without accident the dam was finished and the gate opened six inches, that the creek might not be checked while the reservoir was filling.

“Now all you need to do is to plow and harrow the fields, then you can irrigate and sow,” said Andy.

CHAPTER XXVIII

A TERRIBLE EXPERIMENT

“What shall we do today?” asked Phil, as they sat down to breakfast on the morning following the completion of their irrigation system.

I am going back to Chikau. Don’t dare stay away another day,” returned Andy.

“I was afraid you would say that,” exclaimed Ted. “It has been mighty good of you to work with us as long as you have. But—”

“It certainly has,” interrupted the elder boy. “Some day, we may be able to do more than merely express our gratitude.”