Pauli comments on a proof of a paper by Fierz on Jordan's theory of gravitation.

Reply to Reines' and Cowan's telegram informing Pauli that they have definitely detected neutrinos from fission fragments. "Thanks for message. Everything comes to him who knows how to wait. Pauli"

Pauli comments on a paper by Farquhar and Landsberg "On the Quantum statistical ergodic and H-theorem" which refers to Fierz's work. He also makes additional remarks on Fierz's paper on the H-theorem.

Pauli makes a suggestion concerning the ergodic problem and he also writes about a meeting he had with Pryce in Varenna.

Pauli discusses the relation between reactions of mesons with neutrinos and the beta-disintegration of nucleons. Pauli added some information to this letter in a second letter dated the same day (fierz_0092-175).

Pauli comments on Symanzik's preprint on dispersion relations.

Pauli discusses some probelms of beta-disintegration, with special referecne to the "Fierz-terms".