Probably in no branch of actuarial work have American experts more conspicuously shown those qualities of ingenuity and originality which are freely recognized as among the most prominent characteristics of their fellow-countrymen, than in that which may be summed up, generically, in the title, “Mortality Experience.” And it is remarkable how many instances of their enterprise in this respect have, within the last few years, been en évidence, whereby our available information on vital statistics has been enriched. But a few years ago, the valuable work entitled System and Tables of Life Assurance, prepared and compiled under the superintendence of Mr. Levi Meech, was published, and the equally interesting, though perhaps less important, Experience of the Connecticut Mutual Insurance Company followed shortly after, in 1883. Other publications of a similar character have been circulated since that time, including the Experience of the Provident Life and Trust Company of Philadelphia, reviewed by Mr. Sprague (J.I.A., xxvi, 316); and the list has received its latest addition in the instructive volume whose title appears at the head of this article.