RADIUM AND ITS MARVELS.
I The development in the knowledge of radium and radio-activity which the scientific world has achieved during the Present century, its wizard-like potentialities, and its almost incredible value in the eeale of comparative worth, were matters with which Mr. Clement L. Wragge entirely captivated the ear and interest of hi 6 audience at Bt. James' Hal] laet night. Chiefly <lid he put stress on the big probability of this valuable i product of pitch blende being existent in our own North Island. And he advocated an energetic pursuit after the pitchlike mineral, which was composed, as he explained, mainly of oxide of uranium. The radium itself occurs in infinitesimal proportions in this blende, so far as extracting purposes go, but, as it is valued at something like £3,200,000 per avoirdupois pound, that is not a matter to discourage prospectors. Mr. Wragge illustrated at length and with masterful clearness the various wonderful properties possessed by radium, and as an instance of its enormous storage of force, stated that were it possible for a spoonful to be gathered together, it would possess sufficient energy to lift a weight of 500 tone to a height of a mile.
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