Sorry, no results... Try modifying your search: |
How old is the earth?
Summary
One of Darwin’s chief difficulties in making converts to his views, was convincing a sceptical public, and some equally sceptical physicists, that there had been enough time since the advent of life on earth for the slow process of natural selection to…
Matches: 3 hits
- … for my theoretical views a very long period before the Cambrian formation. ’ The strata of the …
- … in older layers – a phenomenon later referred to as the ‘Cambrian explosion’ – so that complex life …
- … selection could only have produced such a wide variety of Cambrian life over a very long preceding …
Adam Sedgwick
Summary
One of the early leaders of geology in Britain, Adam Sedgwick was born in the Yorkshire village of Dent in 1785. Attending Trinity College Cambridge, he was ordained as clergyman and in 1818 was appointed to the Woodwardian Chair of Geology, which offered…
Matches: 1 hits
- … rocks of Britain, and was instrumental in establishing the 'Cambrian' and 'Devonian& …
Darwin in letters, 1869: Forward on all fronts
Summary
At the start of 1869, Darwin was hard at work making changes and additions for a fifth edition of Origin. He may have resented the interruption to his work on sexual selection and human evolution, but he spent forty-six days on the task. Much of the…
Matches: 1 hits
- … for my theoretical views a very long period before the Cambrian formation’ ( letter to James …
Darwin in letters, 1881: Old friends and new admirers
Summary
In May 1881, Darwin, one of the best-known celebrities in England if not the world, began writing about all the eminent men he had met. He embarked on this task, which formed an addition to his autobiography, because he had nothing else to do. He had…
Matches: 1 hits
- … been the discovery of the three azoic formations beneath the Cambrian and, above all, the …
