Desember 18, 1957

Dr. Bruce Stocker

The Lister Institute
Chelsea Bridge Road
London, S.W.1, England

Dear Brucet

Thanks so much for your note, We certainly do hope we'll have
some time in London, probably just after the Steckholm Congress, and
just before the geneticists meet in Montreal, But I'm afraid it will
be impossible for us to manage a visit the October-June limits this
trip. You were very good to try to arrange this and I'm sorry it won't

EO

The other newa is good too, I can't match with much, except that
F, unlike any other marker, is inherited by the entire exconjugant
cdéone after F x F mating, 1 imagine that colicinogeny 1s also, and
am tooling up for the test, This makes it lock as if E, coli does
have seme cytoplaam,

With all the best,

As ever,

JL/ ow