The next day was an ideal one for their trip and, as Phrosy had packed them a hamper of good things, they expected to enjoy themselves thoroughly.
A little before noon they reached the station of the forest rangers and regarded curiously the long, low buildings and towering antennæ of the wireless.
“I would like to see their sending set,” said Jessie, eagerly. “It must be a wonder.”
“Well, come along,” Darry answered. “We’ll probably find somebody to show us the place.”
It was their good fortune that the first man they met was John Halsey, head of the forest rangers and a very amiable and pleasant gentleman.
When the young folks explained the reason for their visit and he saw that the girls were real radio fans, he made them welcome and volunteered to conduct them personally about the station.
“We have a large dynamo here,” he said, as he led them into the broadcasting room, where the girls examined with eager interest the huge sending apparatus. “By means of this department of radio we keep in constant touch with various points throughout the forest.”
“Then you must have receiving sets in the woods,” said Jessie.
“So we have,” replied Mr. Halsey, smiling. “The receiving end is, naturally, of as much importance as the sending. The broadcasting apparatus is the mouth, the receiving apparatus the ears, of the service.”
“It is wonderful!” murmured Jessie.