Letter from Barbara McClintock to Charles R. Burnham
In this letter McClintock informed Burnham, an NRC fellow at Thomas Morgan's Caltech lab in 1929, that she planned to
attend a meeting in Des Moines the following year at which she hoped to meet with Burnham and his mentor, Alexander Brink.
She was particularly interested in mutants of semisterile, and her research would result in an article in the "Proceedings
of the National Academy of Sciences" in 1930.
Item is handwritten. Item is a photocopy.
Number of Image Pages:
2 (117,021 Bytes)
1929-12-16 (December 16, 1929)
Burnham, Charles R.
Original Repository: University of Minnesota, University Archives. Charles Burnham Papers
Reproduced with permission of the University of Minnesota, University Archives. Charles Burnham Papers
Medical Subject Headings (MeSH):
Education and Research at Cornell, 1925-1931
A Cytological Demonstration of the Location of an Interchange Between Two Non-Homologous Chromosomes of Zea Mays (1930)
Letter from Barbara McClintock to Charles R. Burnham (December 7, 1929)
Box Number: 3
Folder Number: 3
Dec. 16, 1929
Dear Burnham --
I am just scratching off a note to tell you that I am planning to go to Des Moines for the meetings. A sudden change of mind
-- However, when I saw the papers and realized how much corn was being presented and how little from here (no one but Randolph
is going from the genetics dept) I decided to go regardless. Likewise, after reading Brink's abstract I thought it a good
thing to go and talk to him -- with you.
Have been growing loads of seedlings and making chr. counts. Have [diagram] cross grown and seedling counts as follows:
113 V4Lg: 29 V4lg (10 plants counted for chr. all 2n): 35 v4Lg (19 plants counted all 2n): 10 v4lg (all 2n) Among the V4Lg
I divided the seedlings into those that looked 2n plus 1 and those some of which gave signs of 2n plus 1 but most didnt [sic].
So far I have among the 2n plus 1 class, by guess, these counts -- I selected 23 as probable 2n plus 1 -- 18 were 2n plus
1, 2 were 2n plus 3 no counts as poor figs or no figs. Small seeds, or disease would give poor plants and might get into the
2n plus 1 guessed
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class. The results are worth something.
Randolph believes he has located the r and g factors in one arm (longest) of the r-g chr. I have'nt [sic] got the data
straight but will get it from him tomorrow if possible. (will break the ice to [sic] close but it is too much to resist).
The ice is still as thick as ever but maybe his feeling set up over this will cause a thaw. He is still an esquimol [?] [sic]
to Sharp, too.
I shall bring the slides with me if you wish, rather than sending them to you -- How is that?