Yes, it was true, little Camphelia was writhing in convulsions on Mrs. Morrow’s lap, while Mrs. Van Vorst bent over her with agitated movements, applying with Ellen’s help hot water, and mustard, and such remedies as were available at the moment.

Nathalie touched Mrs. Van Vorst softly on the arm, “Is there anything we girls can do?” Her eyes were big with anxious fear.

“Oh, I don’t know,” replied that lady distractedly; “if the doctor were only here!”

“Blue Robin, is that you?” asked Mrs. Morrow quickly, as she heard Nathalie’s voice. “Oh, we must have help! How unfortunate the doctor had to go to the city to-day! But, Nathalie, can’t you send a wireless to Dr. Homer? Tell him to come immediately, for the baby is very ill!”

But Nathalie was already out of the sound of her voice, as with quick, light steps she ran to the girls who, with white distressed faces, awaited her on the veranda. “Mrs. Morrow says to send a wireless to Dr. Homer over at camp,” she explained hurriedly, “but I am afraid we won’t get him, as the wireless hours are nine, twelve and eight, and it is not eight yet.”

“Oh, yes it is,” returned Lillie, “five minutes to eight,” looking up from her little wrist-watch in its leather bandlet. “I’m sure we shall catch him.”

The girls hurried to the boat-house and climbed up to the little cupola, where Dr. Morrow, on first coming to camp, had installed his wireless apparatus. The Pioneers had been somewhat mystified by this procedure, wondering of what use a wireless would be to him up there in those woods. But the doctor had soon demonstrated that it was not only one of the most useful things about camp, but one of the most entertaining.

He had not only been able to discuss with his fellow physician across the lake many professional questions that he came across in his medical books now and then, or letters from his colleague in Westport, who had charge of some of his important cases, but at times had been able to give valuable advice to the younger physician when dealing with some refractory or eccentric scout.

But the doctor had done more than this, for he had gathered the four older girls, Helen, Edith, Lillie, and Nathalie together, and given them lessons in wireless telegraphy, so that they were soon glibly talking about ether waves, spark-coils, condensers, tuners, keys, and so on, in a way that proved his lessons had been well learned. They had, in fact, not only learned the Morse code, so that they could “listen in” when the doctor was “picking up” an S. O. S. call from some ship in distress, but they had heard many a wireless message from some signal station, or from some out-going or in-coming sea craft.

At first it had seemed quite odd that although their little amateur apparatus could send messages only within a radius of five miles, it was able to receive them from a distance of over a thousand. They became so proficient in this click-clack language that they were soon sending aerograms, or wireless messages, to the camp across the Lake for the doctor. Sometimes, too, they sent messages to their scout friends, a privilege only accorded after the messages had been read by their Director, so as to avoid senseless talk or idle gossip.