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Pauli discusses about Ning Hu's difficulties applying the relativistic Rosenfeld-Moller theory, the work of Wentzel and Lopes on "strong coupling" as explanation of Amaldi's results, and the war-time fates of Casimir, Kahn and Amaldi.

Pauli writes about Mrs. Chang's prospective work in Princeton.

Pauli thinks that Lopes' results on the interaction energy-matrix in momentum space are correct. He comments on a paper by Schönberg. He agrees to Jauch's plan to work on the life-time of isobars. He writes about recent results of investigations in Sweden.

Pauli writes about possible topics of work for Mrs. Chang. He writes about the hopes for lifting of censorship of physics work in the USA. He writes about the possibility of printing the lectures he gave at MIT.

Pauli is sending a selection of journals, but he thinks that Dutch physicist's expectations concerning the content of American and English periodicals for the years 1940 - 1945 are too high. However, some interesting work has been done in the neutral countries and Russia. In the USA some progress has been made in more technical fields, like microwave, radar and heavy cores. Pauli did not contribute to the secret work, but he worked alone on meson theory and quantum electrodynamics. He was not able to solve any real problem in this domain. The most interesting subjects are now Amaldi's experiments on neutron-proton-scattering and its discussion by Hulthèn and Wentel. Pauli will send Casimir and Rosenfeld a copy of his M.I.T. lectures on meson theory, which will soon be available. He says that the problem of the nature of nuclear forces is no more solved than it was in 1940, and he does not expect the secret material to help when it is published. Pauli encloses Onsäger's solution of a two-dimensional Ising model which he considers a masterpiece. Pauli says that he has been offered a professorship at Princeton, but since he is still a professor at Zurich he feels some obligation towards them and plans to postpone his decision until he has visited Zurich. He discusses the post-war situation in Europe and the U.S.A. and says that he feels himself to be a European.

Pauli replies to Racah's letter and manuscript. He remarks on the electrostatic self-energy in the theory of holes.

Tells about a report by Schein at a meeting in New York on artificial meson production.

Pauli talks about Peng's work on the divergences.

Pauli discusses the vacant post of assistant. He writes about problems with Amaldi's scattering experiment, Villars' strong-coupling deuteron , symmetric weak coupling, Peng's (in: Proc. Roy. Soc. : 18 (1946), pp.119) attempt to remove divergencies, Heisenberg's S-matrix and Ma's redundant zeros.