Pauli suggests that he could visit Caldirola in Milan on his way back from Venice and Padua.

Heisenberg gives more explanations of what he calls the group property of the Hilbert-space I.

Pauli talks about the conference in Rochester. He waits for the outcome of some new experiments on parity. He talks about his doubts about the two-component theory. He talks about his paper "on the conservation of the lepton-charge".

Pauli expresses doubts as to the correctness of the two-component theory.

Pauli writes about a thought experiment on statistical mechanics, using molecular beams for separation of different stationary states of molecules.