EISERBUD:

of the large nunber of samples involved could be re
in terms of sore absolute methods which other pecple

used for exerple

LIBBY:

8

‘Yea, I think there is a good possibility of that. You

TE

keep good notebooks, then you can always go back ani, by

stanierdising, this would be very helpful if you could
fairly soon, it isn't a vory dig jod, anid write down as
function of energy what your counting efficiency would

then convert back to betacuries per square mile as a re
of this,

ee

That would give us « mber which might differ

eppreciably and might be mre valuable.

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Dorarteanh3 ef{oie
ancy

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