Joshua Milne
Encyclopedia
Carlisle table
In 1815 he compiled the Carlisle tableLife table
In actuarial science, a life table is a table which shows, for each age, what the probability is that a person of that age will die before his or her next birthday...
based on figures from the 1780 census
Census
A census is the procedure of systematically acquiring and recording information about the members of a given population. It is a regularly occurring and official count of a particular population. The term is used mostly in connection with national population and housing censuses; other common...
and deaths in two parish
Parish
A parish is a territorial unit historically under the pastoral care and clerical jurisdiction of one parish priest, who might be assisted in his pastoral duties by a curate or curates - also priests but not the parish priest - from a more or less central parish church with its associated organization...
es of Carlisle, England. It proved remarkably accurate and was still in use in parts of the 20th century.