I entirely agree with your view that no one should be forced to publish what he does not wish to; also, I think it is for
the good of science to permit an author to make any changes in his manuscript that he thinks improve its quality. If you
will reread my letter to you, you will see that it was quite unnecessary for you to try to convince me on these points. My
objections, I reiterate, were entirely based on what seemed to me the impropriety of failing to give the critics an opportunity
to decide for themselves whether their criticisms were or were not now superfluous. As I said before, it is quite possible,
even probable, that I would agree with Spiegelman and you and request to have them deleted. On the other hand, my remarks
on Lindegren's paper include some comments on our Paramecium work not published elsewhere and to which I have already
referred in other papers now in press.
In view of the situation as it now stands, I accept your proposal allowing me to insert in the galley proof an addendum to
Lindergren's paper. After reading Lindegren's manuscript, which I have not yet received, I will decide whether I
wish to avail myself of that privilege and, if so, I will write the addendum.