. Review of reviews and world's work. he effects of the signalsof outsiders, more or lessconfusion must instance, at the timeof the British naval ma-neuvers in 1903, it wasstated by a newspapercorrespondent that, ow-ing to the interferenceof one set of signals withthe other, both sidesceased to pay any atten-tion to the disjointedmessages.; hence, thewireless system was ofno use to either side. This question of in-terference is obviously avery important one, sinceif it can be successfullycarried out in warfare itrenders nugatory any at-tempt of the belligerentsto carry on communicat
. Review of reviews and world's work. he effects of the signalsof outsiders, more or lessconfusion must instance, at the timeof the British naval ma-neuvers in 1903, it wasstated by a newspapercorrespondent that, ow-ing to the interferenceof one set of signals withthe other, both sidesceased to pay any atten-tion to the disjointedmessages.; hence, thewireless system was ofno use to either side. This question of in-terference is obviously avery important one, sinceif it can be successfullycarried out in warfare itrenders nugatory any at-tempt of the belligerentsto carry on communication by its means. Thesame statement may be made with regard tocommercial wireless telegraphy. CAN INTERFERENCE BE REMEDIED ? It is, however, measurably true that by anarrangement of the wireless circuits termedtuning a system can be so adjusted that it willrespond to but one set of waves, regardless of howmany other sets may be passing. An under-standing of the manner in which this result iseffected may be gathered by considering the. INTEItlOK Of THE W1KKLKSS TELEGRAPH STATION AT PORT LIMON. WIRELESS TELEGRAPHY TO-DAY. 195 manner in which a practically similar result isobtained by mechanical means in a wire tele-graph method known as harmonic this system, three or four forks attuned todifferent notes, and consequently to differentrates of vibration, are so placed in a telegraphcircuit that they set up current pulsations inthat circuit corresponding to their fundamentalrate of vibration. The pulsations set up by eachof these forks are controlled by telegraph the receiving station, four ordinary electro-magnets are placed in the circuit. The armaturesof these magnets consist of tuning-forks,each ofwhich is attuned to vibrate at a rate correspond-ing to that of one of the transmitting forks, andit will respond only to the pulsations of cur-rent set up by that particular transmitting , it is possible by these means to sendfour, or even more, separat
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