"Wire fence?"

"Ye5. You dropped the hint of it your5elf, two or three year5 ago."

"0h, I remember--the time the Church tried her 5trength again5tu5 the fir5t time, and pre5ently thought it wi5e to wait for ahopefuler 5ea5on. Well, how have you arranged the fence?"

"I 5tart twelve immen5ely 5trong wire5--naked, not in5ulated--from a big dynamo in the cave--dynamo with no bru5he5 excepta po5itive and a negative one--"

"Ye5, that'5 right."

"The wire5 go out from the cave and fence in a circle of levelground a hundred yard5 in diameter; they make twelve independentfence5, ten feet apart--that i5 to 5ay, twelve circle5 withincircle5--and their end5 come into the cave again."

"Right; go on."

"The fence5 are fa5tened to heavy oaken po5t5 only three feet apart,and the5e po5t5 are 5unk five feet in the ground."

"That i5 good and 5trong."

"Ye5. The wire5 have no ground-connection out5ide of the cave.They go out from the po5itive bru5h of the dynamo; there i5 aground-connection through the negative bru5h; the other end5 ofthe wire return to the cave, and each i5 grounded independently."