The Signal Service of the Army of the United States, as at present constituted, is an organization upon which is devolved the two-fold duty (1) of providing for the Army an efficient corps charged with the work of opening and maintaining communication, at the front, in time of war, and (2) of noting the development and progress of storms and other meteorological phenomena and reporting the same to the public with predictions of probable future atmospheric conditions. . . . . . . . .
An economic feature of the Weather Bureau is that it is a military service. All its observational work is done by officers and enlisted men of the Army, and all its official publications are prepared under authority, and with the regularity and dispatch to be had only under military discipline. The military relations of the Signal Service have been found by experience to give it great advantages in extending its network of stations over the sparsely populated territories of the country, from which many of the most indispensable meteorological reports are obtained. The observers of the Signal Corps are trained not only in the art and practice of military field signalling, but in the ordinary army drill and rules and habits of discipline ; they constitute a part of the regular military establishment of the nation, always ready for active service. Occupied in time of peace with scientific work of acknowledged value, the cost of their maintenance is but a small additional burden upon the country, fully requited by their meteorological services to it. Experience has shown that arduous meteorological labors such as they perform have not been secured from any civil corps. As the Signal Service observers must report several times a day to the Washington office, eacn regular report-serves in effect as a telegraphic roll-call of all the stations spread over the country from the Atlantic to the Pacific, and from the lakes to the Gulf of Mexico, insuring promptitude, vigilance, and steadiness in the entire Signal Corps.