Pauli talks about the question of Beta-spectra. The literature gives ample evidence against Heisenberg's hypothesis.

Pauli writes on philosophical remarks on the essence of the human spirit, on Jung's archetypes and feeling of evidence and on the significance of irrational factors in life.

Pauli asks Dirac to help a young jewish cousin of his who was forced to leave Austria for racial reaons and is now in danger to be expelled from Switzerland. He writes about his recent investigations with Fierz on particles with an arbitrary spin. He asks if they could be published in the Proc. Roy. Soc. He makes some remarks on Dirac's paper on the theory of the electron.

Pauli is glad that Heisenberg's last letter of the 1st May has clarified the problem of frequency dependence of additional terms in Heisenberg's equation. He gives an outline of his paper for the Solvay congress.

Pauli makes a short remark on the application of quantum-mechanical formalism to classical theories.

Pauli makes some remarks on the present state of the meson-theory. He writes about measurements of energy density, charge density and particle density. Ha also makes some personal reports on common colleagues.

Pauli says that Dirac has criticized Weisskopf's work on the self-energy problem. Pauli says he is working on his Solvay report on elementary particle physics, and makes some remarks about the war. Pauli is looking for a successor to his assistant Fierz, who is going to Basel. He hopes to persuade Jauch.

Pauli requests a starting point for discussion on self induction.

Pauli gives a few results concerning the S-matrix which where found by his collaborator Ma in Princeton. He doesn't believe that the S-matrix is a fundamental concept which will play a basic role

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