Note 238-3 — Chapter I

See the exhaustive table in Euler, Mémoires de l'Académie de Berlin 1756, in Süssmilch, Göttl. Ordnung, I, § 160. Bridge has constructed the following formula: Log. A = Log. P + n x Log.(1+(m-b)/mb). Here P stands for the actually existing population, 1/m = the ratio between the annual mortality and the number of the living, 1/b, the ratio of the number of annual births to the number of the living, n the number of years, A, the population at the end of three years, the quantity sought for.