Dear Dr. Demerec:

Thank you for your letter and for the 4-point data. We shall study these
as closely as we can, and I will send you any comment when iwa we have.

I sm sorry that Iwill not be able to accept your cordial invitation to
spend a week this summer at Cold Spring Harbor. We would like very mich to
do this some time, perhaps next year or so » but we could not fit it into the
plans we have already made for this summer. But let me thank you nevertheless
for asking.

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Yours sincerely,
: / x

bon ho Ba
dosha Lederberg