Pauli confirms that there will be a physics meeting in Basel in September. Schwinger, Rabi, Fermi, Cockcroft, Dyson and others have promised to come. Pauli is going to Princeton in November, but he will be back in May 1950. He gives some comments on his own latest work.

Pauli encountered some difficulties in obtaining his visa from the Indian embassy of Bern.

Pauli writes on matters concerning his trip to India. He hopes to meet Bhabha in Bombay.

Pauli gives his thoughts about Bhabha's examination of a translation of a classical field theory with some singularities. Fierz went through Bagge's calculation on the Blau and Wambacher's experiment and found some discrepancies. Pauli is going to accept a Princeton invitation.

The time has come for Pauli to go to India. He thinks that he could get leave from Zürich and should be in India from November 1952 until the end of February 1953. He asks if that suits Bhabha. He says theoretical physics is not making much progress. Källén is working on the question to look behind the veil of Dyson's power series. The new Swiss "infant prodigy", Alder, is working on angular correlation, shell model and related problems and Shafrot on superconductivity. He wonders about his lecture obligations in India.

Pauli discusses his trip to India.

Pauli gives his opinion on Bhabha's presentation in Zürich about meson and proton dispersion. He also reports about his correspondence with Heisenberg on the same subject.

Pauli received an invitation to India from Dr. S S Nehru and he is asking Bhabha for more details. He thinks his visit would be possible in 1949. He says that Dr. Villars has made a theory on the magnetic moments of H3 and Jost has extended the theory of the emission of many low frequency photons.

Pauli says that he thanked Nehru for his invitation, but declined because he plans a visit to Sweden and Copenhagen in September. He told Nehru that he has accepted Bhabha's invitation.

Pauli is back from his trip to India. He has written a paper on the Hamiltonian structure of non-local field theories.