Show cost colt of radium greatly reduced As a result of work done by the bureau of mines of the united state department of the interior in connection conne tl with tb the national radium institute radium bromide hag boo been produced at a cost of only per gram a most remarkable result remit when hen it la Is remembered that only recently the salt lias has been selling belling for and upward per gram still we have no definite information what it costs to produce this high priced salt there Is however little possibility that the prices will bo be greatly reduced as all of the known deposits of the ores from which radium Is at present obtained are held very closely by their owners and moreover these deposits cannot last many years at the present rate of working these facts together with a ra rapidly eidly indrea increasing sing demand will undoubtedly increase the price of radium even above the above big figures notwithstanding the improvements in the methods of extracting scientific american |