Charles Darwin, On the structure and distribution of coral reefs; also geological observations on the Volcanic Islands and parts of South America visited during the Voyage of H.M.S. Beagle, Ward, Lock, and Co., London, New York, and Melbourne, 1890, XX + 549 pages. "with maps, plates, and numerous illustrations" and a critical introduction to each work by Prof. John W. Judd, F.R.S. 6 plates (of which three are expandable) + several figures Coral Reefs : critical introduction page 3 - 10; introduction page 11-13; 14-154 Geological observations on Volcanic islands : critical introduction page 157-165; page 167-265 Geological observations on South America : critical introduction page 269-276; page 277-518 Index page 519-549