When this volume was in page proof four further reviews by Keynes came to our notice. Three of these are from his early years and relate to the chapter on Statistics.

From The Journal of the Royal Statistical Society, May 1911

CZUBER, EMANUEL. WahrscheMichkeitsrechnung und ihre Anwendung auf Fehlerausgleichung, Statistik, und Lebensversicherung. Second edition. 2 vols. (Leipzig, B. G. Teubner), 1910.

Professor Czuber is to be congratulated upon the completion of an exhaustive treatise on the mathematical theory of probability and of statistics, embodying the substance of the greater part of his investigations on these subjects which have been published during the last twenty-seven years. In spite of his 900 pages, Professor Czuber's treatment is extremely compressed, and the great length of his book is due to the very wide range which he brings into direct relation with the fundamental theorems of mathematical probability. This new and greatly enlarged edition must long remain the standard treatise on the topics with which it deals. There is no work in English which covers at all the same ground, and it greatly excels in grasp and thoroughness the French treatises which most challenge comparison with it.

By expanding into two volumes the single volume of the first edition, which was published in 1903, Professor Czuber has been able to find room for considerable additions, and it may be convenient to readers of the earlier editions to indicate briefly the main alterations which have now been made. In the first part, which deals with the pure theory of probability, some 40 pages have been added which are mainly directed towards strengthening the philosophical side of the treatment.