and 1917, as far as they know, are the mst recent onesithat have been made, and I suppose as good as anys I talked te Dr. Fleisher at the Geological Survey some ago and he was very skeptical about the wet cheatcal strontius My evidence I just put out in self defense 1s based en ly upon the up~take body ental of ar? — as compared with say caldium 45, end also the endogencus, so we feel very definitely that quansitively in almost the same way. are treated Of course if you have different fractions in the soll, although you think strontiun would occur in the sane chenical state as calciug, but there might | possibly te a fractionation there, but certainly after if gets to the animal we feel that there is no fractionation. KangSa Perhaps we cught to proceed with the calculations, Az i have an idea of what the wicertainties are we can di , separately. The next section -— how much available calcium there is ecil, f= ow {9 that correct? vv ‘SOLOMON This estimate was gotten by calling up a man whos I have at the Waltham Field Station - and saying ~ if you had make « guess, what guess would you make, and so it is not terri KRAMISl The old Gabriel used that, Can't we do better than that? Denafimant 92 Doergy thiogwe 17 fr