THE JOHNS HOPKINS UNIVERSITY
BALTIMORE 18, MARYLAND

:<CCLLUM-PRATT INSTITUTE
INVESTIGATION OF
MICRONUTRIENT ELEMENTS

January 30, 1952

Dr. J. Lederberg

Dept. of Bacteriology
University of Wisconsin
Madison 6, Wis.

Dear gs

I am enclosing a tentative program of our second
Phosphorus Symposium, which will be held at the University
on June 16, 17, 18, and 19, 1952. We would like to invite
you to attend and participate in these meetings.

As you may know, we usually publish the proceed-
ings of our symposia, and we hope that if you have any
material that you would like to include in the publication,
you will submit it to us. I think it is obvious from the
program that time would not allow for an extensive oral
presentation, but we hope that you will feel free to mention
the pertinent facts during the discussions which follow the
papers on the program.

The Institute will take care of the hotel and food
expenses while you are in Baltimore. We hope very much that
you will be able to participate, and I would appreciate hear-
ing from you at your earliest convenience as to whether you
plan to attend.

Sincerely yours,

fal

W. D. McElroy
Director

WIM: SWB

Enc.