Our interest in 1. J. Bienayme was kindled by the discovery of his paper
of 1845 on simple branching processes as a model for extinction of
family names. In this work he announced the key criticality theorem 28
years before it was rediscovered in incomplete form by Galton and Watson
(after whom the process was subsequently and erroneously named).
Bienayme was not an obscure figure in his time and he achieved a
position of some eminence both as a civil servant and as an Academician.
However, his is no longer widely known. There has been some recognition
of his name work on least squares, and a gradually fading attribution in
connection with the (Bienayme-) Chebyshev inequality, but little more.
In fact, he made substantial contributions to most of the significant
problems of probability and statistics which were of contemporary
interest, and interacted with the major figures of the period. We have,
over a period of years, collected his traceable scientific work and many
interesting features have come to light. The present monograph has
resulted from an attempt to describe his work in its historical context.
Earlier progress reports have appeared in Heyde and Seneta (1972, to be
reprinted in Studies in the History of Probability and Statistics,
Volume 2, Griffin, London; 1975; 1976).