Heisenberg writes about the Einstein - de Haas effect, the failure of Bohr's theory of He, his own work with Born and about Lande's theory of multiplets.

Heisenberg writes on stability considerations in H$_{2}$ and about failure of the energy-calculations for He.

Heisenberg writes on the recent Göttingen theory of the anomalous Zeeman effect.

Heisenberg writes about Einstein's objections to Bohr's radiation theory and Born's comments on Kramer's dispersion formula.

Heisenberg writes about the intensity rules of Ornstein as correspondence of the correspondence principle.

Heisenberg writes about Pauli's latest work and congratulates Pauli for all the "lies" contained in it.

Heisenberg writes about recent developments in the formalism of quantum mechanics, perturbation theory and some results for systems with axial symmetry.

Heisenberg writes about the problem of continuous spectra from the point of view of quantum mechanics. The effect of time dependent external forces on the atom, and Jordan's calculations of the statistical behaviour of proper vibration of a membrane according to the new theory.

Heisenberg writes about the compatibility of Goudsmit's hypothesis with the formalism of Heisenberg.