Arizona republican., 1921-08-30

between the Greeks and an enemy caused rain to fall. Ever since rain has said to follow battles.
 This eventually started experiments with concussion. If noise and explo- sions caused rain, it was argued. why not produce rain whenever 1t was needed. So formulas for rainmaking were evolved and patented. Rainmaking Patents
 One patent of 1891 reserved for the inventor an original method of rain making which he explained was suddenly to chill the atmosphere by rapid evaporation, and it is also ad- visable to produce a heavy concus- sion in connection with the cooling in order to set the different air cur rents in motion. 1t is obvious that sudden and rapid evaporation in the upper regions of the atmosphere could be accomplished in various ways by the evaporation of various highly compressed gases; but the evaporation consequent upon the re- lease of nquefied carbonic acid gas is thought to be the most efficient.
 Actual experiments were expensive. | Explosives, balloons. chemicals and inventors of rain production systems and their work was in consequence mostly theory.
 One senator being interested in the project of rainmaking, congress was | in 1891 persuaded to appropriate 5000 so that the concussion theory might be tested. Gen ]. c. Dyren- forth, a well known meteorologfst was sent to Texas as a special field worker for the department of agri- culture. He worked with self-explod- I ho mite QfraHhpd rC kites, and with gases. But s9000 was by no means an adequate sum. The funds lasted long enough for only three experiments
 Dyrenforth reported that when conditions were favorable-that is | when there was a moist cloud. which Is undisturbed, would pass off with out precipitating the moisture-tht jarring of this cloud by concussior would cause the drops to agglomerats and fall in greater or lesser quan- tity. according to the degree of the moistness of the atmosphere. When there was no cloud. he held that rain might be induced, but that there was | likely to be a wasteful expenditure oi time and material in getting results I This report was regarded as en- couragfng. Rain did fall while by renforth worked. Congyess appro- d then lost it's enthusiasm for the ex-
 periments. So no conclusion Wal
 reached.
 The connection between battles ane
 rainfall is generally explained ps
 scientists as a natural occurrence
 Troop movements and preparations
 for battle are for convenien1
 planned in clear spell wheneci
 possible. Then when the battle oc'
 CUTS a rain might maturity be ex'
 pected-
 The effect on the cl-N ds of such eN'
 plosions as are caused by cannon na'
 been so far held by the conservatVe'
 to be negngible According to New
 comb. the water drops in | te clouo' far from being jostled about an' turned into larger. heavier drops ara moved to so small degree, an' .. elasticity restores them ss quichiy
 that a steady shower could scarcei. , he connected with any explosion II , the clouds any more than with th s explosion of a pistol shot.
 Science has always adopteu
 show me- attitude toward rainmak
 ing efforts. So far 1t considers Una ! ft has not been shown. The weathe ! bureau finds no cause for eNcltehen ! in the fact that the farmers or Meoi 2 cine Hat have reengaged Charie
 Hatfield. rainmaker, to make ram io
 them next year.