Pauli states again his conjecture that a penetrative radiation is emitted in the Beta-decay. He also repeats his more important that conservation of energy and momentum in nuclear processes is conservation of all quantized quantities and the law that the symmetry character of the total system is not changed. by such a problem. He discusses relations between proton and neutron, and in great detail, the theory of holes.

Heisenberg writes about calculations about the theory of holes and on the self-energy of a particle. He replies to Pauli's question about the scattering of neutrons by protons and the difference between exchange forces and regular forces. He writes on the decay of the neutron and on his discussion with Bloch about the spin of the neutron being opposite to that of the proton.

Pauli gives some suggestions for a joint meeting with Born in Bolzano. He comments on the theory of holes in the light of Peierl's results.

Pauli congratulates Heisenberg on the receipt of the Nobel prize. He gives some comments and calculations on the theory of holes. he believes that the problem of the neutrino is connected with that of holes.

Pauli doesn't accept Heisenberg's arguments in his letter of the 12 November 1933 and shows by calculations his objections.

Pauli compares Heisenberg's formalism with that of Dirac and gives some calculations of certain matrices.

Pauli gives critical remarks and some calculations concerning Borns' electrodynamics and his ideas on gravitation.

Pauli makes additional remarks to the calculations on the theory of holes.

Pauli writes of his impression of Dirac's manuscript and gives a short precis of Dirac's ideas. He makes more remarks on the problem of self-energy.

Pauli writes about the question of finiteness or infinity of charge density in the hole theory.