Heisenberg talks about the meeting of the Nobel prize winners in Lindeau. He writes about progress in his model theory.

Frederick Reines and Clyde Cowan inform Pauli that they have detected neutrinos.

Pauli comments on a philosophical manuscript by Fierz concerning the methods of classical physics and of quantum physics.

Pauli replies to Källén's letter of the 3 October 1956. He writes about a proof by Symanzik concerning dispersion relations.

Pauli writes of another possibility of mixing Hamilton functions in special reflections.

Pauli makes some suggestions for a seminar talk to be given by Fierz.

Pauli makes historical remarks on Fermi's beta-decay theory and on the neutron. Pauli talks about his paper on paramagnetism (in: Z. Phys. : 41 (1927), pp.81) and about Dirac's statistics (Proc. R. Soc. Lond., A : 112 (1926), pp.661).