This early work on actuarial science is both expensive and hard to find in its first edition. It contains details on the principles of interest, annuities, life contingencies, endowments and much more. Complete with all the relevant formulas, this is a fascinating work and is thoroughly recommended for anyone interested in actuarial science. Many of the earliest books, particularly those dating back to the 1900s and before, are now extremely scarce. We are republishing these classic works in affordable, high quality, modern editions, using the original text and artwork.