fresh air. Sitting in that telephone booth, trying to get an image on a plate, and not succeeding, has gotten on my nerves. I want to write out an order for Koku to take to town though. I want to get some fresh selenium, and then I'm going to make new plates."
Tom made some memoranda, and then, giving Koku the order for the chemist, the young inventor closed up his shop, and went with Ned down to Lake Carlopa, where the motor boat was moored.
This was not the same boat Tom had first purchased, some years ago, but a comparatively new and powerful craft.
"It sure is one grand little day for a ride," remarked Ned, as he got in the craft, while Tom looked over the engine.
"Yes, I'm glad you came over, and routed me out," said the young inventor. "When I get going on a thing I don't know enough to stop. Oh, I forgot something!"
"What?" asked Ned.
"I forgot to leave word about Mr. Halling's airship. It's all fixed and ready for him, but I put on a new control, and I wanted to explain to him about it. He might not know how to work it. I left word with father, though, that if he came for it he must not try it until he had
