Pauli writes about his theoretical investigation of the Zeeman-effect. He makes remarks about the validity of Landé's shema for certain multiplets.

Pauli talks about his Zeeman-effect model in the light of Back's experimental results.

Pauli thanks Landé for sending him Back's and Landé's papers. He explains theoretically the line intensities in the partial Paschen-Back effect.

Pauli is enthusiastic about Landé's recent paper and the assumption that the optical doublets and X-ray doublets are in principal the same phenomenon.

Pauli writes about his calculations of the Balmerline intensities with the help of Schrödinger's calculus.

Pauli plans a reconsideration of the Pauli-Fierz work (in: Z. Phys. : 106 (1937), pp.572) on the H-theorem.

Pauli replies to the letter of Lee and Yang of 12 February. He talks about My-decay and B-particles, and about recent experiments on parity non-conservation.

About Pauli's contribution to a conference in Rehovot (Israel).

About the 'special (jocular) bulletin', H. Lipkin's letter of November 24, Mrs Wu, etc.