SINCE the translation ot the first part of this volume, was published, its whole scientific tendency, and specially a series of individual passages in it, have been subjected to a more than vigorous ...

LET me begin by removing misapprehensions. I did not, as Prof. J. B. S. Haldane suggests, attack Prof. E. A. Milne and Sir Arthur Eddington: “Milne”, “Eddington” and “Dirac” were merely symbols to ...