and 1917, as far as they know, are the mst recent ones that have been
made, and I suppose as goed as any.
I talked to Dr. Fleisher at the Geological Survey some time ago and he
was very skeptical about the wet chemical strontium data.
My evidence I just put out in self defense is based entirely upon the
up-take body andaal of 3r°° — as compared with say calaium 45, and
also the endogenous, so we feel very definitely that they are treated
quantitively in almost the sace way. Of course if you aight have
different fractions in the soil, although you think that strontiun
would ecour in the sane shemical state as calciug, but there aight
possibly be a fractionation there, but certainly after it gets to the
animal we feel that there ie no fractionation.
Perhaps we ought to proceed with the calculations.
As long as we
have an idea of what the woertainties are we can discuss these
separately.
The next section — how auch avallable calcium there is in soll.
I
understood yesterday that this is supposed to he 1 part per thousand
o~ {a that correct?
This estinate was gotten by calling up a man whos J have never net
at the Waltham Mield Station - and saying < if you had to make a
guess, what guess would you make, and ao it is not terribly good.
The old Gabriel used that.
Can't, we de better than that?
mm