operations which were to follow. I need not say that I entered into the game with added zest when I found that my saucy but capable opponent was again at your side. And the next morning, in the train, though I felt that she was commencing to better formulate her ideas, I felt secure that she would not comprehend the instrument which alone seemed to threaten my immunity and freedom to leave the country—the "wireless." For, as I explained the operation of the "wireless" to her that morning, I did not point out the essential weakness of all "wireless" communication—the weakness which I had determined to employ, viz., the impossibility of any receiving station knowing from what source any messages come.
"'As I explained that morning to her, any "wireless" station can scatter waves in all directions and establish communication with any other station within a reasonable distance—but there is no certain way of identifying the waves from a certain station.
337
