riugust 20, 19%

Dr. Almiro Blumenechefn
Inatituto de Genetica
Escola Superior de Agrioultura
Yiraoioabe, Silo ihulo

Deter Almiro:

   I wae much relieved to receive your good letter of August 5
which arrived two daye ago,   It told me that I hsd o received
two oommunlcations from yma*         P
                         One of these wns the etter that
you sent to me in Pebruary with enclosed photograyhe, and the other
w~ja the copy of the letter to the Rockefeller Foundation.    Loss of
thtselettere id disturbing.   lot only have I woridered why I had not
heard from you but aleo you must have wo:;dered why I did not respond
to these letters.   In the future, if I suspect IL?at it letter h*is been
lost, I shall write again to detc?rmine if this might be the ~8~8.
fn the past, you h:.rve ,tiways responded promptly.   The lor,g silence
made me suspeot that sOp1eti-lirt.g MN serio~lsly ~ro:ig biit I could not
guess what it might be.

   I am most pleatied with your analysis of knob distr!Lb:lti,~r?s and
aluo with the charts and I thank you for tG:irg the trouble do
inform me 80 cle:trly.   Also, the photograi.ho you h;lve nn...Ce are fine.
You mentioned diffic:Aties in Dbtai-2in.g photogra;>hfc au2plies,
If you will make a list of those supplies that I might oarrji with me,
I shall bring them to lIexic0 City at our next meet.lfig.

   dith regard to our next meeting, I shall oommt~Lste with
Dr.  ?!ellhausen to find out from him when it will be convenient for
uls to meet in dexico City.   I will telephone to Dr. ic'ellhausen
a8 it will be the most direclt way to get an answer Prom Mm.
I believe that we lshould get together ~8 lsoon as convenient.   Sometime
late in October or early November now appenre tc SF! a good time.
Prom you letter I received the impression that such 9, time would be
oonvenient for you.   I have been in constant con.tact with aill Brown
by telephone.   & is ~nxioua to meet with us and 1 am pleased that
he wants to home,   He has home interesting new informtition derived
from breeding experiments with maize race8 of some of the Caribbean
Island@,   I believe it fits with whut we alreidy have learned.

   During the gast two daya, I have been tied-up with 8 Retries of
conferences and thus I huve not had time to study in detail the data
that you sent to me*   Nsverthelesa,  from the extensfve report in yo5r
letter I recognize that we are in agreement in constructing the
relationships of m:rize in the area that you are examir~ing.   I state
this beuaur;e I h!tve spent several months on organizing the knsjb data
that wzs avczilsble to me,  These fnolude the raw data of Iro,~ley and


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Kate received from Kate in April, on my data, on that of Kato
for Mexico (Raleigh data and the more recent Tu~peiro data), and
the data you gave u8 in Mexfco aity,   X have made separate map8 of
knob distributions, one for each type of knob, with relative
frequenuies of appearanoe at each location.   The data are placed
within states for 'Mexico, Guatemala, and for Brazil.   For the other
central American oountriee, the data is placed directly at the location
of collection, as shown in the mape that I gave to you.  slso, 1
have redone the we~~tcrn Youth Amerioan data to ahow frequencies at
each collection site.   The method of plotting the data for each
collection site h:3ts besn meet revealing, especially 80 for
Costa Rica.   It allows some quite aoaurate conolusions to be drawn.
It took me weeks to make these maps a8 the data had to be rear anized
in a mannm that would allow me to transfer it to the maps,  f have
sent a summarized copy of these maps to Bill Brown.   Bill will be
in &urope al.1 of September,   iJhen he returns, I will meet with him in
Des Mol)nes to go over the detail8 with him,  taking your analyees with
me,   I will bring the maps with me to lriexiao City.   1 fear to send
them by mail to Brazil.   .&to ia also working on knob distribution8
and coming to some conclusions about them.   I am p:l.eRsed that each of
u8 is working independently on tk;is and each in a different way.
Each method will hive its distinctive value.   Me can compare methods
and then decide on the value of each for future purposes.

   Your sumnc.:ry of administrative diffictilties at tiracicaba is not
encouraging.   We ruust di8CUos this and its meaning for YOU*  I do
hope that it will not place you in a dzffictilt position to cOritiriu@
your work, especially now that you will h ve a person from Venezuela
with you.   I am delighted that the Venezuelan raoeR will be examined.
I am oonvinced that it is a most important area.

   I suspect that you will not receive this letter before you start
your trip.   Although tkLe trip will be atrenuoue, it should be moot
interesting.   &lease let me know when you return.   A short note
will do,   I will know, then, when 1 can commmicate with you directly.

   Again, many thanks for your most instructive and informative
letter.   It was much apprseiated,

Very best regirds,
              Sinoerely,

Barbara P?cClintook