Pauli asks questions regarding Fierz's work on the H-theorem. He writes on the space of Pais and its relation to the space of Kaluza.

Pauli replies to Pais' letter about W-space. He talks about the connection of Pais' theory with those of Kaluza and Klein. He writes about the geometrization of meson-nucleon forces.

Pauli writes on additional calculations about Jordan's theory of gravitational constant.

Pauli gives some details about the confor-transformations in Jordan's field equations.

Pauli writes about his travel plans to Les Houches.

Pauli makes some remarks on Fierz's work on the H-theorem.

Pauli writes more about form-factors. The analogon of the arbitrary cut between observed system and means of observation in field theory has yet to be found. Pauli thinks of some group-theoretical formulation by which the same physical object is either seen as source of the field or as produced field. He talks on ideas about the origin of life and its connection with the realization of low probabilities.

Pauli hopes that Klein will come to Zürich.

Pauli hopes that Klein will be present when he will the Pais' w-space.