Excerpt of a letter from W. Pauli to C. A. Meier (C+A=F).

Letter from E. Panofsky to W. Pauli.

Letter from E. Panofsky to W. Pauli.

Pauli writes about a discussion with Rabi, and about war physics, and says that he is working on the positron theory.

Pauli says he has attended a physicists' meeting in Philadelphia. He writes about new measurements on the meson shower. Weisskopf is invited to Princeton for three weeks at the end of January. Pauli is doubtful about the work of Havas. He sends messages about Klein and Bohr, and makes some remarks about Delbrück.

Pauli thinks that he should remain in the U.S.A. until the end of the war. He asks Jauch to send him his lecture notes. He discusses the problems of electron scattering. He writes of theories about the meson in the U.S.A. and about experiments with proton-proton scattering.

Settlement of Weisskopf's travel expenses.

Pauli refers Klein to Belinfante (Physica) for side conditions needed for Klein's equations. Pauli describes the conditions.

Pauli discusses the treatment of interaction between heavy particles and electrons. He comments on Marshak and Weisskopf'calculations. The main problem is now the creation of mesons in explosions.

Pauli writes about the work done in Berkeley on meson theory. He writes about his lecture on Cosmic rays theory. He writes about Rooseland's report on the Nazi terror in Norway.