Adam Sedgwick: REFERENCES

Berry, W. B. N. 1968. Growth of a Prehistoric Time Scale Based on Organic Evolution. W. H. Freeman, San Francisco.

Burkhardt, F. and Smith, S. (eds.) 1985. The Correspondence of Charles Darwin. Volume 1: 1821-1836. Cambridge University Press, Cambridge.

Desmond, A. and Moore, J. 1991. Darwin. Warner Books, New York.

Rudwick, M. J. S. 1985. The Meaning of Fossils: Episodes in the History of Palaeontology. 2nd edition. University of Chicago Press, Chicago.

Speakman, C. 1982. Adam Sedgwick: Geologist and Dalesman 1785-1873. A Biography in Twelve Themes. Broad Oak Press, Heathfield, East Sussex, England.