Thirring sends the continuation of his work on electrodynamics.

Thirring discusses papers on renormalization by Klein, McCormick and by Cooper.

This letter is a continuation of Thirring's letter of the 8th July 1957 on identical particles.

Touschek writes that he found an error in his paper when he followed Pauli's reference to the reality condition of Fierz. He makes some more comments on his work.

Touschek writes about a paper by Jensen and Steck.

Touschek agrees with the introduction of a new index in Pauli's theory. He writes about the discrete mass spectrum in the field-free case as function of total isotopic spin.

Touschek gives "weak" and "strong" postulates on reversibility of field operators for a system of observables as used in his work. He writes about S-matrix elements for irreversible system.

Touschek comments on nonconservation of parity in processes involved in the creation or annihilation of neutrinos.

Touschek writes about Pais paper published in Physica. He writes about his own work on time-reversal.

Touschek gives arguments for conservation of heavy particles based on Eich-invariance.