Page:Tom Swift Among the Diamond Makers.djvu/213

Rh grew louder. The outburst of electrical fury was likely to take place momentarily, and that it would be unusually severe was shown by the precautions taken by the diamond makers. They attached a number of extra wires, and brought out some insulated, hard rubber platforms, on which they themselves stood. Tom and Mr. Jenks were much interested in watching this detail of the work, and sought to learn how each part of the process was done.

"I almost think we can make diamonds, Tom, when we get back to civilization," whispered Mr. Jenks.

"I hope we can," answered Tom, "and we can't get back any too soon to suit me. I want to be in my airship again."

"I don't blame you. But look, they are getting ready to adjust the switch."

The adventurers ceased their whispered talk, and eagerly watched the diamond makers. Folwell and Munson were hurrying to and fro in the big cave, attending to the adjustments of the machinery.

"On your insulated plates—all of you," Folwell gave the order. "This is going to be a terrific storm. The gage shows twice the power we have ever used, and it's creeping up every