Pauli writes of his reactions to the experiments showing parity violation. He gives reasons for his doubt of this possibility up to now. The main problem is now: why are the strong interactions reflexion-invariant? Pauli makes some general considerations on TCP-invariance.

Pauli makes technical arrangements in connection with his impending visit to London. He criticises the title of Salam's paper "Universal Fermi-interaction". He says that theoreticians should never use the word "universal".

Pauli talks about the Schafroth's new paper. He explains why his model gives quantitatively not correct results and how this can be mended. He comments on the papers by Butler and Friedmann. He talks about CERN and about his paper for the

Pauli writes about the congress in Pisa and his talks with Heisenberg. He talks about the Russian physicists. He recommends "Nuovo Cimento" instead of Phys. Rev. He talks about the doubts of Lehmann, Heisenberg's assistant and Heisenberg's work.

Pauli writes about his plans for the summer and about the appointments of several colleagues.

Pauli replies to Schafroth's letter. He talks about his results about an ideal gas of charged bosons. He makes a short comments on supra-conductivity, resonance-methods and about papers by Butler, Friedmann and Feynman.

Pauli replies to Schafroth's letter of the 9th December 1954. He makes some "pedagogical" advice about contacts with colleagues. He makes critical comments on Schafroth's paper on "supra-conductivity of a charged ideal Bose-gas". He talks about a physical error in this paper.He agrees with Schafroth that the Bose-gas should be given more attention.

Pauli replies to Schafroth's letter. He comments on supraconductivity. He writes about vacancies for theoretical physicists in Switzerland and about difficulties of burocracy. He talks about parity and conservation laws for light particles.