Pauli suggests that he could visit Caldirola in Milan on his way back from Venice and Padua.

Pauli will seriously consider sending an invitation to Dr. Dell'Antonio, whom Caldirola recommends.

Pauli asks about details of an article by Caldirola on the experimental verification of the relativistic time dilatation.

Pauli gives critical remarks and some calculations concerning Borns' electrodynamics and his ideas on gravitation.

Pauli replies to Born's question about a possible publication in Helv. Phys. Acta. He expresses his interest in some results (spin) of Born's field quantization.

Pauli gives some calculations on an integral used by Born.

Pauli returns to a problem discussed at the Florence conference concerning irreversibility and the H-theorem.

Pauli praises Born's lecture "Der Mensch und das Atom".

Pauli sends a letter of congratulation on Born's 60th birthday. He makes some remarks on quantized field theory and on meson theory in particular. He adds some personal remarks on colleagues in Switzerland, Germany and the U.S.A.