Pauli sends Bohr a copy of his article for the Sommerfeld-Festschrift with a few comments. He writes about Kronig's work on band-spectra. He also talks about his good cooperation with Scherrer and about his plans for the vacation.

Pauli talks about the data for a planned conference in Copenhagen.

Pauli asks about the Copenhagen Conference. He criticises the Heisenberg-Pauli papers, makes remarks on superconductivity and about Dirac's negative mass.

Pauli reports on Lise Meitner's criticism of the Ellis-Wooster measurement of beta spectrum.

Pauli congratulates Jordan on his appointment in Rostock. He makes short comments on Fermi's paper on quantum electrodynamics, on the paper by Fock and Weyl on the field equations of matter waves , which are invariant with respect to arbitrary rotations, and by which Einstein's Fernparallelismus comes to grief. He gossips about Einstein's lectures on Fernparallelismus and quantum theory. He writes about the gauge invariance and gives rumors about a new paper by Dirac.

Pauli questions and comments on the theory of holes.

Pauli writes about the difficulties of the theory of holes, as far as physical interpretation is concerned.

Pauli gives further critical comments on Heisenberg's formalism. He writes of Bloch's report on a theory of Beta-desintegration by Fermi.

Pauli talks about the solution he found for the matrix problem.

In connection with a note by De Broglie, published in: comptes rendus: (1934) Bd. 198, Heft Nr. 2, S. 135, Pauliremarks that the main problem is the correct formulation of the interaction terms of neutrino and electrons.