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Show Radium Bought by States and the Supply ft Bi legislative appropriation of $220,000 New York State bought recently ?'t grams of radium nnd has established a rree treatmcn. for cancer bv radium in this country. A second purchase of gram followed. The example of New York h.u teen emulate,! by Wisconsin, which will be the fir.st of the Vv sStern or Middle States to afford free radium treatment The radium -purchased bj these States vs an American product, mined in Colorado. It .is contained in 125 tons of carnotltc ore, which Is telng reduced by fractional crystallization crystal-lization at the extraction plant situated at Orur.ge, N. J. For the cancer treatment the ( manatlon of radium Is used Instead of radium ra-dium itself, following the method of Prof Duane ot Harvard University. This method is only practicable when tho amount of radium available is at least one gram Tho greatest supply of the world's radium sinee 1014 has teen produced In the United su.'r? and it w.jf. first produced here the year before that. Us production In flee ears arled from 1.7 grams to 12.6 grams a ear, the latter being ?he, production of the year 11 8 It is estimated that the total radium production In the United States to 1919 ap- v picximates 55 grams of radium clement which rep resents, probably, more than half of ah the radium produced in the world Dr. Moore of the Bureau of Mines made a. study of the carnotltc region In 1913 U(1 estimated roughly the amount of radium to be extracted from the ore In sight as about 100 grams. This was before the fields had been developed other than lightly. These flci.res. It Is said, should be multiplied by fj live, now that many claims have been k ttudled and sv stematically drilled. It has been sugKested that mesothorlum a bypioe.uct from monazite. should replace radium in the luminoMs material which Is being used cn airplanes, ship Instrument dials watches, docks and other lndlcattn- i devices for it is said that owing to thes I lUWd due to t.tc rapid production of tho prec lOUS xubstanro in fy and 19,, in this country will V soon exhausted 0r considerably cut down I m m |