Pauli expresses great interest in Frauenfelder's experimental results. He formulates three independent questions concerning parity violation to which an experimental answer can be found in principle.

Pauli writes on an article by Kerenyi on Greek mythology and its connection with certain ideas which lately occupied Pauli's mind.

Pauli writes about the results of his discussion (with Källén) of the motion of V- and N-particles in the Lee model, and is now more optimistic about Heisenberg's interpretation. He has questions which still have to be clarified.

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

Pauli asks how Frauenfelder will test the exclusion principle for positrons.

Pauli is against the interpretation given by Princeton physicists to certain Beta-decay experiments and against the two-component theory.

Pauli invites Yang to a lecture in Zürich. He comments on an interpretation of a recent experiment by Garvin and Ledermann and by Deutsch and Frauenfelder on parity violation. He critizices two-component theory. He writes of his own views on T-invariance and conservation of Lepton-Charge. Only the development of quantized field theories will provide answers to the deeper questions.

Pauli refers to Preston's paper in the Canadian Journal of Physics which supports Pauli's criticism expressed in the last letter.