Show by concussion in connection with the recent discussions of the effects of explosions in producing rain min it ought to bo be noted that for or twenty years or more mora tho the rocky mountains have afforded excellent opportunities for or observing the effects upon rainfall of heavy explosions plo at high elevations there are ara in this region thousands of mines mining claims with open cuts and adits adias and quarries at elevations from to 13 adoo feet nitroglycerin prepa preparations preparation ratio ns are now the explosives used in blasting during the tha summer there is a great amount of blasting high on the mountains several railways and wagon roads reach to 1000 feet and the grading gradin of these affords much blasting I 1 have made considerable sid erable inquiry and found no one who had observed any connection between explosions plo and rainfall probably few or none were on the watch for such connection but if there were any obvious connection it would atwould have been observed since there have been so go many years of 0 opportunity cor science |