Pauli writes on the symbolism of the blue colour. He attempts at an interpretation of its significance for us.

Pauli gives technical details about the dates of seminars.

Pauli writes on a reply he made to a letter by W Scherrer.

Pauli writes on a second letter by Scherrer regarding a paper he wrote.

Pauli makes a reference to a dream after having read a historical paper by Fierz.

Pauli replies to Fierz's letter about Regiomontanus and his mathematical work. Pauli attempts an interpretation of his dream about Regiomontanus.

Pauli makes a short remark about the equivalence of Fierz and Gelfant's results concerning the Lorentz group.

Pauli writes about a letter written by Schafroth who suggests an explanation of supraconductivity. He comments on a discussion on evolution in a meeting of biologists, in which Pauli participated and on the reasons for the resentment of physicists by biologists.

Pauli writes on the difficulties of quantum electrodynamics and the various attempts to overcome them. Pauli expresses doubts about the renormalization method.