CALIFORNIA INSTITUTE OF TECHNOLOGY
PASADENA, CALIFORNIA

DIVISION OF BIOLOGY

December 4, 1956

Dr. J. Lederberg
Department of Genetics
University of Wisconsin
Madison 6, Wisconsin

Dear Drs. Lederbergsand Morse:

Thank you for your letter of November 23rd and for your offer of
the stocks. Obviously if you need nay of the stocks of phages or
bacteria I have been using you are very welcome to them. I have been
keeping in touch with Arber of Geneva and I hope that you are too since
his work on defective prophage may be quite interesting.

I would like your advice on one point. ‘The note containing my
results was sent to Virology but since receiving your letter I have been
thinking that it would be well to include data on the multiplication
of HFT in your Gal, your Gals, and your Gal) . Do you think I
should stop the publication of my note at the present time and wait to
publish it until this data has been obtained, or shall I publish it as
it is and write later another more complete paper perhaps in collabora-
tion with you?

I am going away (on doctor's orders because of my heart) for a
month in Mexico (c/o Hotel Oceano, Puerto Vallarta, Jal., Mexico) but
I shall write to you from there on some experiments on lysogenization
by lambda which René Cohen has done in Paris lately. I think we are
all interested in that,and in the techniques,so I shall think that my
resting time on the seashore won't be entirely wasted if I thus can be
of some use to you. It would be nice if we could meet sometimes in
Pasadena!

Thank you again.
Sincerely,
J. Weigle

JW/am
cc: Dr. M. L. Morse