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Gertrude May Chamberlain was born in 1881 in State Center, Iowa. Her parents were Austin Eliab Chamberlain and Mary Emogene Russell (1846-1887). Ulysses Simpson Grant was born 16 February 1864 in Readsboro, Vermont. His parents were Daniel Seaver Grant and Francis Sophia Adams (1839-1918). Gertrude and Ulysses were married 30 June 1900. They had twelve children and lived in Boxelder, Wyoming. Traces Gertrude's and Ulysses' ancestor and descendants in Wyoming, Iowa, Vermont, Connecticut,Massachusetts, England, Ireland, Wales and elsewhere.
Beginning in 1924, Proceedings are incorporated into the Apr. number.
Where did we come from? Before there was life there had to be something to live on - a planet, a solar system. During the past 200 years, astronomers and geologists have developed and tested several different theories about the origin of the solar system and the nature of the Earth. Together, the three volumes that make up A History of Modern Planetary Physics present a survey of these theories. The early twentieth century saw the replacement of the Nebular Hypothesis with the Chamberlain-Moulton theory that the solar system resulted from the encounter of the Sun with a passing star. Fruitful Encounters follows the eventual refutation of the encounter theory and the subsequent revival of a modernised Nebular Hypothesis. Professor Brush also discusses the role of findings from the Apollo space programme, especially the analysis of lunar samples, culminating in the establishment, in the 1980s, of the 'giant impact' theory of the Moon's origin.