Pauli suggests a topic (field theory) and possible dates for his Bern lecture.

Pauli requests a copy of the Bern proceedings for Fock. He talks about Bleuler's appointment in Zürich.

About the philosophical signification of Quantum Mechanics. Remarks on a manuscript by H. Reichenbach, among others concerning the definition of 'Normalsystem'.

Pauli writes about a thermodynamical problem. He gives calculations of entropy change of a gas in a box with due regard to quantum statistics.

About various topics concerning Källén, Symanzik, Jordan, Krolikowski, etc.