Pauli talks about the Riesz-Gustafson method. He makes some comments on Ma's letter of 26 June.

Pauli makes further remarks on the redundant zeros of Ma, with a mathematical addendum.

Pauli makes comments on Ma's new manuscript sent to him on 29 Sept.

Pauli replies to Ma's letter of 7 Nov and comment on his success in reaching invariance by a combination of two substraction methods. He talks about the difficulty of logarithmic singularity in the theory of holes.

Pauli writes more about the invariant weight factor in the commutation rules.

Pauli reports on discussions with Nielson (Lund) on the Riesz-Gustafson method.

Pauli makes comments on Ma's paper. He is against the waste of too much work on purely classical theory. He makes comments on an earlier letter of Ma, concerning a certain invariant factor.

Pauli replies to Ma's letter of 3 May. He makes comparison of Riesz's method with the Lambda-limiting process. He recommands to Ma to work on supra-conductivity.

Pauli makes more remarks on Ma's redundant zeros of the S-matrix.

Pauli replies to Ma's letter of 20 July, concerning the validity of a relation by Heisenberg. He reports on the international physics conference in Cambridge, on a discussion there with Powell and Amaldi, and on papers delivered by Wentzel, Møller, Heitler and Pauli.