Oct. 10, 1957

Dear Boriis:

Yours of Sept. 30 just received.

It was very thoughtful of you to ask us to return via Chile, but
I am afraid that would be impossible as past of this trip. I hastened
to tell you this, so that you do not go to further fraitless trouble,
We are travelling entirely by air, and there just is no direct service
from Australia to South America, incredible as that may sound. The
nearest connection we could make would be via Hawaii and then Los
Angeles; the }Jatter ss hardly closer than Chicago. It might be an
anteresting experience, and perhaps we can discuss it at some later
date (after we have recovered from our present travels.)

/ According to our present itinerary, we will leave Melbourne Oct 31;
for the next few weeks we will be returning home and our mail will be
rather disorganized. Probably, you would do best during November to
address any correspondence to Madison to await our return.

_I wrote Madison about your cultures & just hope they had enough
sense to gend them by air. I will renew the matter in my next letter.
I am very pleased to hear you could get your PHS grant; try for some
more wext time if it wouldhelp you. - oe SO

... Sol had told me of the protoplast behavior; since the protoplasts
Can grow as L-forms ( we have just sent in our paper on this to JBact)
they must have a regulatory mechanism, presumably in the living mem
brane rather than the inert wall. Perhaps a fraction of your propoplasts
were inviable or permeable-- you wouldbe measuring this fraction, while ~
Rickenberg measures the reust! . , St . oO

Your ms. has just arrived from Madison. I will give it earliest
attention and write you further as necessary. OF best to Raquelita
and Jessica. : an

Sadero>—

7 .
Joshua Lederberg