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.

Pauli talks about Ma's proof of the nonvalidity of Heisenberg's relation. He asks Ma to report to him on papers by Oppenheimer and Bethe at the Amer. Phys. Soc. meeting in New York.

Pauli refers to the ideas of G D Wassermann on "mental patterns", which are similar to Jung's archetypes. He believes in a wider significance of the concept of archetype which may help undestanding ESP and its connection with evolution. He asks a specific question regarding ESP experiments.

Pauli writes about the excess of the scattered radiation over the Klein-Nishina formula and its possible interpretation on nuclear effect.

Pauli writes about a review of Gamow's book, written by Pauli.

Pauli makes preliminary congratulation on Meitner's 80th birthday. He sends her as a present an article on the history of the neutrino. He mentions Bohr's idea of 1930 that energy-law is not valid in Beta-decay.

Pauli thanks Meitner for her letter of 14 Oct. He answers Meitner's question as to whether he is now less critical of Heisenberg's recent theory. He congratulates her on her 80th birthday.