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Wireless Telegraphy 21 America. To this end the erection of two powerful stations was taken in hand, the one at Poldhu, in Cornwall, and the other at Cape Cod, Massachusetts, U.S.A. At each station elaborate and lofty masts of steelwork were run up to carry the aerial. Up to this time Marconi had suffered but little delay and interruption from outside causes during his experiments, but this latest and greatest enterprise appeared to be dogged with ill-luck. The station at Poldhu was completed sufficiently to enable experi- ments in transmitting across the Atlantic to be com- menced, but on September 18th, 1901, they were brought to a summary, though temporary, cessa- tion by a severe storm which destroyed the masts. Two months’ hard work, however, sufficed to restore them sufficiently to enable the task to be resumed. Then an accident befell the Cape Cod station, the masts of which were so damaged as to indicate the lapse of many months before they could be repaired. This second accident was exasperating, but sooner than delay further experiments he set out to Glace Bay, Newfoundland, where he decided to use a tem- porary station to ascertain whether or not the arrange- ments which were being laid down at Poldhu were being carried out upon the correct lines. Large kites, to which receivers were attached, were sent aloft, and to the wire establishing communication with the ground a telephone receiver was connected, the signals which were thus received being announced by a series of clicks. An arrangement had been made with the operators at Poldhu to the effect that after December nth, 1901, a succession of “ S’s” followed by a short