Railroads
U. S.
STATES, 1921-1922.) (See WIRE- (See UNITED in making one of Aside RAIN MAKING. The vital importance of rainfall to crops and so to life and prosperity in general has made the problem of artificial rain perennial interest and concern. from unfounded popular ideas, there have been many scientific proposals made, based upon knowledge of the nature of rainfall; but the only result of experiments thus far has been to establish the fact in the minds of scientists that while it may be possible to produce atmospheric raindrops on a small scale, any effort to create the necessary conditions of rain on the large scale of nature would be altofrom unfounded popular ideas, there have been many scientific proposals made, based upon knowledge of the nature of rainfall; but the only result of experi- ments thus far has been to establish the not actually impossible. The principal Texas, the results ers thus far has been the detonation of method employed by would-be rain makof which, while not quite decisive, were regarded by the scientific world as fail- ures. More recently, the late C. W. Post conducted similar experiments in Texas and Michigan (1912). No rain was obconducted extensive experiments with gases and explosives in Tex explosives in the upper air. In 1891, of which, while not quite decisive, were of the U. S. Department of Ag: iculture, ures. More recently, the late C. W. Post conducted similar experiments in Texas and Michigan (1912). No rain was obregarded by the scientific world as failwas duly foretold by regular weather tained in these experiments except what reports.