Salam makes some corrections to his letter of 13 February 1957.
Sin títuloPauli 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.
Sin títuloLehmann, Symanzik and Zimmermann reply to Pauli's letter, in particular about Lee's model and the appearance of "ghosts".
Sin títuloHeisenberg talks about a calculation which leads to a result different from that given by Pauli in his last letter.
Sin títuloHeisenberg continues his mathematical argument of his last letter.
Sin títuloPauli asks why in Heisenberg's calculations the force-potentials are always real.
Sin títuloFierz makes comments on a paper by Salam which was sent to Fierz by Pauli.
Sin títuloPauli makes further comments on Salam's paper in the light of Fierz's comments on it. He writes on Delbrück's paper about the relation between physics and biology and makes some personal remarks on his "mirror-complex" and about Salam.
Sin títuloPauli suggests that he could visit Caldirola in Milan on his way back from Venice and Padua.
Sin títuloHeisenberg gives more explanations of what he calls the group property of the Hilbert-space I.
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