MITCHELL (contimed ) X don't know what that figure is, tut you would certainly/inter= fere with the grovth of the person ani growth of the bengs, Bat at least you can say that 100 milligrass per day, en|the average, will get the person up to his 1000 grass in 20 ani the actual rates vary. | I have these curves if anyer wants to look at thea, incidentally. Starting for at the age of one year, the person is accumulating calcite at the rate of 150 milligrans ani that goes down to the age 4 to 5 — to ubere he needs 50 milligrans of caloiun per ¢ laid dewn to maintain a normal grovih rate. During the aie lescent years it gces up as high as 250 milligrans of calbiua, Se if you are interested in any spot checking or any Lanbiate 7 effect of a short-tera, you would have to take the age of] the person into account, But on the average cf 100 atlligran per day would get you up to that 1000 gran calciua ce : ¥ - a in 20 years (the grovth period), The reason I have used phat figure is that our analyses show that apyrcximtely 700 7/20 of a gram, 700 nilligrans, is the amount of strorz Which is fcund cn eualyses of human bone, so that in the absence of any further data we just assused that strontiw is being Jaid down in the sane relative proporticn to calqium, and so using the calcium curve you can then make an es as to the anmcunt of strontius which the body is depositinz in the American anvironaent, That is, these ere analyses uli Jal