CARNEGIE INSTITUTION OF WASHINGTON

DEPARTMENT OF GENETICS

COLD SPRING HARBOR, LONG ISLAND, N.Y.

July 31, 1947

Dr. Joshua Lederberg
Osborn Botanical Laboratory
New Haven, Connecticut

Dear Lederberg:

It was kind of you to write me concerning
a reference that you have considered including in your
yrojected review of Lindegren's yeast work, You really
need have no cause to be concerned with such a reference
as the statements that I have made have been purely verbal.
It was very generous of you, however, to think of it.

Ly analysis of the data occurred in this way.
I saw Lindegren's paper in manuscript form and at that time
worked through the data on a volysomie basis to see if it
would apply. Considering our knowledge of genetics, his
cytogene hypothesis seemed fantastic when built upon such
limited evidence. The polysomic analysis worked out well
enough, considering the limited data. in extended analysis
would have cleared the picture considerably. T have made,
however, ro formal statement concerning yossible volyploid
or polysonic inheritance to exolain nis results. Please
don't feel that you must give me credit. It is not necessary.

“ith vest regards to you and Esther,

Sincerely yours,

Gotu UBtuhed

Rarbara NeClintock