But when, after two more days, the ethereal signals ceased abruptly and week passed without their recurrence, Professor Whiteman’s theory began to be derided, and the whole thing was dismissed as some temporary phenomenon of the atmosphere.
It was something of a shock, therefore, when, on the eighth night after the cessation of the disturbances, the calls were suddenly resumed—much louder than before, as if the power creating their electrical impulses had been increased. Now wireless stations all over the world plainly heard the staccato, mystifying challenge coming out of the ether.
This time, too, the interval between the signals was of a new length—eleven minutes and six seconds.
The next day the matter took on still further importance.
Scientists all along the Pacific Coast of the United States reported that in the night their seismographs had recorded a series of light earthquakes; and it was noted that these tremors had occurred precisely eleven minutes and six seconds apart—simultaneously with the sounding of the mysterious wireless calls!
After that the aerial signals did not stop during any part of the twenty-four hours. And the earth shocks continued, gradually increasing in severity. They kept perfect time with the signals through the ether—a shock for every whisper, a rest for every pause. In the course of a couple of weeks the quakes attained such force that in many places they could be distinctly felt by anyone standing still upon solid ground.
Science now became fully aware of the existence of some new and sinister—or at least unfathomed—force in the world, and began to give the matter profound study.
However, both Dr. Ferdinand Gresham and myself remained in complete ignorance of these events; for, as I have said, we were in the interior of Labrador. We both possessed a keen love of the wilderness, where, in vigorous sports, we renewed our energy for the work to be done in the cities—the doctor’s as director of the great astronomical observatory at the National University; mine in the prosaic channels of business.
To the public, which knew him only through his books and lectures, Dr. Gresham perhaps appeared the last person in the world anyone would seek for a companion: a man silent, preoccupied, austere, unsociable. But underneath this aloofness and taciturnity was a character of rare strength, good nature and loveableness. And, once beyond the barriers of civilization, his austerity vanished, and he became a prince of good fellows, actually reveling in hardships and danger.
The complete change in him on such occasions brought to mind a strange phase of his life about which not even I, his most intimate associate, knew anything—a period in which he had undertaken a mysterious pilgrimage alone into the dark interior of China.