Pauli asks a question about a possible magnetic spin moment of yukons, and calculations in connection with this.

Pauli writes again on the question concerning de Broglie 's equation.

The letter is about the impending visit of Pauli to England and Scotland.

The letter asks a question about a model for neutrinos with Delta-like interaction.

Pauli thanks Kemmer for his letter and his satisfactory results.

This letter contains another mathematical question in connection with an equation in de Broglies's theory which Pauli wants to criticize in his report to the Solvay-congress.

Pauli writes about the mathematics of hyper-complex numbers and the application for the case of higher spin.

This letter contains more calculations with hyper-complex numbers and applications to systems of particles with given spin.

About the postponement of the Zurich congress.

Pauli asks personal questions in connection with the war. He makes remarks on Heisenberg's fear of continuing his correspondence with Pauli for political reasonsnd writes about the mathematical treatment of particles with higher spin.