I think, Dr. Bethey that the problem is sosevbat siapli this is an intricate coe which has been worked oa by « 5 further adopted by the International Comissica so that think, accept that as the standard to which ve are Well, I'm sorry I can't agree with you on two accounts. mierocurie is the acceptable dose of radiua?l say that 2 I thought t you said} yeaterday that there was a factor five in‘ effectivensss BusKERt energys Toere vere two standards, actually, and they are not enti ly consistent by about a factor of five. The 500 aillircentgens per wi to a gamma ray type of situatioa. " X vas trying to argue that you should use that standard. then it is The density of ionisation along the beta track te diff mlong the gaume tay track. But that is what you messure when you measure roentgens. SOLOMOS: Ho, but a factor of five or 10 for alpha rays as opposed tolveta rays, ani this 19 just because of the increase ts the tonteation flong the track Thie also is true for deta rays. Donartwant df flor Energy op 'si OFfiga TEMES ag