Show mite of radium a mass of material A tube of radium radburn generally made we us of by physicians la Is about a shade under an inch in length and about on an eighth in diameter it contains milligrams ot of raa radium um bromide this minute quantity la is the product of twelve tons of ore three tons tolls ot of hydrochloric acid live tons of carbonate of soda one ton of sulphuric acid ton ten tons of coal burned in the operation of reduction more than a month of work iud and five hundred successive |