The Reports of the Registrar-General of Births, Deaths, and Marriages, and the writings of the late Mr. F. G. P. Neison and others, abound with statistical information regarding the influence of occupation on health and the duration of life. These statistics, the most of which are derived from observations made upon the general population, or the members of Friendly Societies, are useful in many ways. From them we learn that there are certain occupations which tend to preserve health and prolong life, and that there are other occupations which tend as decidedly to injure health and shorten life. But these statistics are not applicable to the business of Life Assurance, and are not appropriate data for the purpose of determining the amount of premium which persons of different occupations should pay for Life Assurance. We still desiderate reliable data for this purpose, and it can best be obtained from the Life Assurance Companies themselves.