Show increase REASE or THE AVERAGE DURATION or OF humanlike HUMAN LIFE in a lecture before the mechanics institute at cincinnati prof buchanan B stated tb that at one half of ail all who were born in the latter part of the sixteenth century died under hive five years 0 of age eighteen years being at that time the average a longevity in the seventeenth century one ne half of the population died under twelve years butin butiu the hinst first six sixty y years y ears of the eighteenth century one half of the population over twenty seven years in the latter forty years tears one half exceed exceeded dd thirty two years of age at kt the beginning of the be present century one half exceeded forty years and from 1838 to 1845 one half exceeded forty three years the average longevity at these successive periods has been it increased from 18 years in the sixteenth century ap up to the last reports |