Title: Observations medical and political, on the small-pox, and the advantages and disadvantages of general inoculation, especially in cities : and on the mortality of mankind at every age in city and country; with a comparative view and regular tables of all the fatal diseases and casualties in London, during the last one hundred and five years, ... To which is added a postscript, containing the sketch of an easy plan for new modelling and essentially improving the London bills of births and mortality ...