Pauli writes about another mathematical comment on Heisenberg's paper.

Pauli recommends Schafroth for a new post in Basel.

Pauli encloses a letter to Springer. He talks about a new paper by Schwinger on elementary particles. He writes on the logical connection of Källén's recent results to an example given by Jost last spring. He also talks about Thirring's model.

Pauli's remarks on a preliminary paper by Misner on a Hamiltonian principle for quantized covariant field theory. misner_0399-4. For a better quality image of the appendix, see misner_0399-4.

Pauli replies to Heisenberg's letter of the 30 October, on $\gamma$-invariance and conservation of electric charge: which group corresponds to this? He talks about mirror-invariance in isotopic spin space.

Pauli writes about his interest in Touschek's remark at Padova and Venice about the derivation of C- and P-symmetry from special properties.

Pauli makes critical comments on Fierz's last letter and his calculations. He writes on speculations about C-, P-, T-invariance. Possibly it is not the strength of the interaction but primarily its form which determines C-, P-, T-invariance.

Pauli makes remarks on Misner's work: the Hamiltonian density cannot vanish, neither classically nor with quantization.