September 16, 1955

Dr. Frank Fenner

Professor of Microbiology

John Curtin School of Medical Research
Canberra, A.C.T.

Dear Dr, Fenner:
Thank you for your very kind letter of the 9th.

The rumor to which you referred has some basis in fact, namely
that Professor Rubbo has invited us to visit his department during (our)
summer of 1957 (not 1956) and we have tentatively agreed to such a plan
if the financial and other details can be arranged. I would suggest that
you consukt him on the momentary status of these plans. Of course we
should not want to miss an opportunity to visit you at Canbsgra.

Thank you for continuing to exchange reprints, which I appreciate
very much. I was interedted to note your comment on the modification of
your rabbits, as well as your mention of Holloway's work on Ps. aertginosa.
We did some work a few years ago on Ps. fluorescens (one,omly,of Stanier's
strains) but found no evidaace then of recombination among auxotrophic
mutants. We have hoped to extend that study to additional strains, but have
not gone further as yet. Is the aeruginosa system a transduction (mediated
by a cellular fraction) or does it require intact cells?

With best regards,

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