Pauli's letter praises Dyson's work. He also asks a question about renormalization technique.

Pauli writes about the connection of renormalization with power series expansion. He makes some remarks on the difficulties of meson theories and on mathematical formulation of fundamental laws of nature. He adds some remarks on his mathematical background.

Pauli refers to a paper by Weisskopf concerning the self-energy of the electron, which might be useful to Dirac on his discussion of the logarythmic infinities in the theory of holes. A copy of the paper is mailed to Dirac.

Pauli thinks that his new formulation of quantum electrodynamics represents a progress, although he agrees with Dirac that a greater symmetry between space-variables and time-variables seems desirable.

Pauli asks Dirac to help a young jewish cousin of his who was forced to leave Austria for racial reaons and is now in danger to be expelled from Switzerland. He writes about his recent investigations with Fierz on particles with an arbitrary spin. He asks if they could be published in the Proc. Roy. Soc. He makes some remarks on Dirac's paper on the theory of the electron.

Pauli makes a short remark on the application of quantum-mechanical formalism to classical theories.

Pauli expresses his dissatisfaction over Dorac's remarks in the Proc. R. S. on Heisenberg's and pauli's papers on quantum electrodynamics. He particularly argues against Dirac's doubts as to the relativistic and the invariance of quan tum electrodynamics.

Pauli thanks Dirac for his readiness to help Pauli's jewish cousin in getting a British visa.

Pauli gives further details concerning his jewish cousin.

Pauli's letter concerns his paper with Fierz on particles with arbitrary spin. He asks Dirac to communicate it to the Royal Society. the paper shows that a consistent theory of such particles in an electromagnetic field is possible.