The mortality of assured lives is introduced by a short statement of the process followed in the obtainment of the rate of mortality among the male population of England and Wales during seven teen years, and in which the results are compared with the rate obtained by following the same process with the male population of Scotland during ten years. A statement is given of the method employed for collecting the facts referring to assured lives, and of tabulating the results with the view of extracting, not only the total numbers entering upon and dying in each year of life, but of exhibiting the experience of several highly interesting and important sections of risks, and more especially with the view of showing the nature and benefits accruing from the assurance of selected healthy lives.