OCR Text |
Show o Mitt of Radium a Mass of Material. A tubo of radium generally mado use of by physicians Is about n hIuhIo under an Inch in length and about an eighth In diameter. It contains 100 mlfllgrnms of radium bromide. This mlnuto quantity Is tho product of twelve tons of oro, three tons of hydrochloric ncld, five tons of carbon-nto carbon-nto of soda, ono ton ot hulphurlc ncld, ten tons of conl, burned In the operation opera-tion of reduction, moro than a month of work and flvo hundred successive crystallizations. n ! |