Pauli announces his visit in Leiden and asks Ehrenfest to read his last paper on the H-theorem in order to discuss it with him.

Pauli talks about the data for a planned conference in Copenhagen.

Pauli reports on Lise Meitner's criticism of the Ellis-Wooster measurement of beta spectrum.

Pauli congratulates Jordan on his appointment in Rostock. He makes short comments on Fermi's paper on quantum electrodynamics, on the paper by Fock and Weyl on the field equations of matter waves , which are invariant with respect to arbitrary rotations, and by which Einstein's Fernparallelismus comes to grief. He gossips about Einstein's lectures on Fernparallelismus and quantum theory. He writes about the gauge invariance and gives rumors about a new paper by Dirac.

Pauli sends a holiday travel plan in U.S.

Pauli questions and comments on the theory of holes.