Washington, D. C.

Radio station using illegal wave length in your vicinity. 
Investigate and report.

Brandon,

Radio Bureau.

Professor Arnold shook his head slowly, as he handed the telegram back.  “There’s a wireless apparatus of my own on my yacht,” he remarked slowly.  “I have an instrument there which I think can help you greatly.  Let’s see what we can do.”

“All right,” nodded Colonel Swift to Woodward.  “Try.”

The two went out and a few minutes later, on the shore, jumped into Arnold’s fast little motor-boat and sped out across the water until they swung around alongside the trim yacht which Arnold was using.

It was a compact and comfortable little craft with lines that indicated both gracefulness and speed.  On one of the masts, as they approached, Woodward noticed the wireless aerial.  They climbed up the ladder over the side and made their way directly to the wireless room, where Arnold sat down and at once began to adjust the apparatus.

Woodward seemed keenly interested in inspecting the plant which was of a curious type and not exactly like any that he had seen before.

“Wireless apparatus,” explained Arnold, still at work, “as you know, is divided into three parts, the source of power, the making and sending of wireless waves, including the key, spark, condenser and tuning coil, and the receiving apparatus—­head telephones, antennae, ground and detector.  This is a very compact system with facilities for a quick change from one wave length to another.  It has a spark gap, quenched type, break system relay—­operator can hear any interference while transmitting—­transformation by a single throw of a six-point switch which tunes the oscillating and open circuits to resonance.”

Woodward watched him keenly, following his explanation carefully, as Arnold concluded.

“You might call it a radio detective,” he added.

Even the startling experience of the morning when she was carried off and finally jumped from the little tramp steamer that had attempted to cut the cable did not dampen Elaine’s ardor.  She missed the guiding hand of Kennedy, yet felt impelled to follow up and investigate the strange things that had been happening in the neighborhood of her summer home since his disappearance.

I succeeded in getting her safely home after Burnside and I rescued her in the hydroaeroplane, but no sooner had she changed her clothes for dry ones than she disappeared herself.  At least I could not find her, though, later, I found that she had stolen away to town and there had purchased a complete outfit of men’s clothes from a second hand dealer.

Cautiously, with the large bundle under her arm, she returned to Dodge Hall and almost sneaked into her own home and up-stairs to her room.  She locked the door and hastily unwrapped the bundle taking out a tattered suit and the other things, holding them up and laughing gleefully as she took off her own pretty clothes and donned these hideous garments.