UNIVERSITY OF CALIFORNIA

i
DEPARTMENT OF BACTERIOLOGY March 17, 195)
BERKELEY 4, CALIFORNIA

Dr, Joshua Lederberg
Department of Genetics
University of wisconsin
Madison, Wisconsin

Dear Josh,

Mike and I think you should publish the enclosed, with the following
suggested changes:

Line 2 - "familiarity" improperly used,

Line 11 - "experience on this advice" - poor!

Line 15 - How many bugs are "10-6 to 107! per ml"?

Line 18 - You mean "portion," not "proportion"

Lines 19+20 ~ State that "one drop is deposited in the center of
each square" before stating that some drops will be found to
contain one cell, It sounds now as though you move the drops
after examining them,

6) Paragraph 2, line 4 - "Additional fluid" - you mean "broth"?

Li fee ho
~~

Thanks for the preview,

AS ever,

K, A, Adelberg
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Dear Ed, Mile, Roger:

Thanks for your coment, which arrived just as I was sending thie revision
to Porter. As you will see, just about all of your suggestions have been embodied
here. 10~6/ ml was, of course, a misprint but served the useful function of
piqueing some and sumiry to comment. The Chinese custom of adding a purposeful
blemish to any wrk so there will be no pretense of perfection has som merit!

Ed—— If you should still require Y~478 now, or in the future, it can be furhished

on request.