The phenomena which underlie what seem at the present time, to be the most promising lines of investigation for the development of wireless telephony, namely, the utilization of one very high-frequency alternating current as what might be termed the " carrier " for other and lower frequency alternating currents, appeal to the imagination not only of the engineer but also of the physicist. It was consequently with more than usual interest that I commenced an investigation of Major Squier's wQrk in the early part of this year at the time the newspapers first announced the issuance of his patents and described in a general way the character of his discoveries. My investigation had for its object the determination of whether any of Major Squier's reported discoveries contained the germ of a speech transmission system that could be made commercially applicable in a general, universal telephone system. There were two main questions to be answered, first, were the newspaper accounts of Major Squier's work correct as to what he had accomplished, that is, was it possible even on a single circuit to obtain the results claimed? Second, on the basis of an affirmative answer to the first query was there anything in Major Squier's research that would make his discoveries commercially applicable to either a local or long distance telephone plant? If not, did the research give promise of ultimate commercial adaptation and what further developments would be needed to so adapt it?