| Show THEORY OF ORE DEPOSITS scientist upsets the ideas held by colorado mining men denver aug 27 the second day of he fiftieth annual convention of the american association tor the advancement of science wag taken up with meeting of all the affiliated societies at which a hundred papers most of them purely technical were read by scientists A lecture on ore deposits by prof C R vanish excited much discussion as ho expounded a on the formation of ore deposits which la diametrically opposed to tho prevailing opinions of colorado mining experts he contended that precious metal and the baser metallic mines do not grow richer with depth |