coe hboepital in Boston one ought to be able to got some where Bt 50 and 100 grams of bone every day. The next question that yae need is one that is really much more cucbus, This is how auch strontfum will tere be in 100 grams of bone in terns of dom. I played arowl vith this on estimating the avralleble caicius content in fields, m using their figure of how many disintegrations there were per squar¢ meter, and I came w vith 8.8 doa per gram of caleium, this is multipling the Alumgordo figure by 40, and that 1s certainly quite wrong in|terus of the total amount of stuff which is up there. LYSBYs This is one thousants to the tolerance, according to Dr. Mitchell. a Kilo of calcium, so that gives you a thousandth of « microc Deo these check? That is 2.8yer gran and a kilogram... and thousanith of a microcurit, Be hed | tha is a | How, this is in the earth, end the question 1s vist te in meal Rere you got cut of the region of mking a guess of the ovatleble calcium ani of ming the guesses cf how mch of the calcium that is available in the earth 1s going to be available in mun. I found amasonble shount of data in the literature, nome of {4 very good, ant I didn't feally mike a thorcugh literature search, but roughly it locks as thoaigh there is a or of 2 to 1 against you, both in the plant and in man. Flents , pick up ealcius against strontiuz 2 te 1 ani man will, so I just tool] a figure of &. what do you think, Dr. Kemr, bov decent is this? OMAR; Our experience has been that 4% would be prettymuch the sand. We Bave bed @ lot of date in animals end the sbsorption from the gut of ~ seaeT vows ty ty ont TH ye oof 7 . re re) VE SAQA mM ; * gtrontium