About the English translation of W. Pauli's essay 'Der Einfluss archetypischer Vorstellungen auf die Bildung Naturwissenschaftlicher Theorien bei Kepler'. V. Gillmor informs that W. McGuire is responsible for the copy-editing and preparation of the manuscript for the press.

Tonnelat and George ask Pauli on behalf of a committee for a contribution to a volume in honour of De Broglie's 60th birthday in 1952.

Gårding writes on points in his enclosed thesis.

Gagnebin replies to Pauli's question on Lamarck. He gives a detailed description of Lamarck's ideas which are essentially rationalistic.

Fubini explains how to obtain several formulae in his theory.

Møller thanks Pauli for his letters of 24. and 28.6.52.

Frauenfelder gives a detailed description of a new experiment for parity measurement.

Frauenfelder refers in detail to several experiments whose results do not contradict the 2-component theory.

Frauenfelder hopes to meet Pauli in Zürich. He gives some comments on his experiments.