Pauli expresses his interest in the work of Hu and Lopes and gives advice on how to treat the problem in the case that a strict solution of the equations should be impossible. He comments on offprints he got from Switzerland.

Pauli writes about the competition between Hulthén's theory Review of Modern Physics (1945), Vol. 17 and Wentzel's "strong coupling" case as explanation for neutron-proton scattering.

Pauli writes about offprints to be sent to certain adresses in Europe. He comments on Lopes' dissertation and gives some advice about the proper personal contact with elder colleagues.

Pauli writes more about his offprints.

Pauli mentions "artificial" mesons created by accelerators and the possibility of their identity with cosmic ray mesons. He gives some comments on Jauch's work. He writes that Anisotropy of scattering cannot be explained by Delta-function.

Pauli expresses doubts about analytic continuation of S-matrix. He says that a determination of S is needed.

In this short letter Pauli only wants to tell Bohr that he has not forgotten his 60th birthday on October 7th.