of the "Narrative of the Surveying Voyages of H.M.S. 'Adventure' and 'Beagle,' etc." For the rest of the year, Corals and Zoology of the Voyage. Publication of the "Zoology of the Voyage of H.M.S. 'Beagle,'" Part II. (Mammalia).


Worked at Corals and the Zoology of the Voyage. Contributed Geological introduction to Part I. of the "Zoology of the Voyage" (Fossil Mammalia by Owen).


Publication of Part III. of the "Zoology of the Voyage" (Birds). Read paper on Boulders and Glacial Deposits of South America, to Geological Society. Published paper on a remarkable bar of Sandstone off Pernambuco, on the coast of Brazil. Publication of Part IV. of "Zoology of the Voyage" (Fish).


May 6th: Last proof of the Coral book corrected.

June: Examined Glacier action in Wales. "Wrote pencil sketch of my Species Theory."

July: Wrote paper on Glaciers of Caernarvonshire.

October: Began his book on Volcanic Islands.


Working at "Volcanic Islands" and "some Species work."


February 13th: Finished "Volcanic Islands."

July to September: Wrote an enlarged version of Species Theory. Papers on Sagitta, and on Planaria.

July 27th: Began his book on the Geology of South America.


Paper on the Analogy of the Structure of Volcanic Rocks with that of Glaciers. "Proc. R. Soc. Edin."

April 25th to August 25th: Working at second edition of "Naturalist's Voyage."


October 1st: Finished last proof of "Geological Observations on South America." Papers on Atlantic Dust, and on Geology of Falkland Islands, communicated to the Geological Society. Paper on Arthrobalanus.


Working at Cirripedes. Review of Waterhouse's "Natural History of the Mammalia."


March 20th: Finished Scientific Instructions in Geology for the Admiralty Manual. Working at Cirripedes. Paper on Erratic Boulders.


Health especially bad. Working at Cirripedes.

March-June: Water-cure at Malvern.


Working at Cirripedes. Published Monographs of Recent and Fossil Lepadidae.


Working at Cirripedes.


November 30th: "Royal Medal given to me."


Published Monographs on Recent and on Fossil Balanidae and Verrucidae.

September 9th: Finished packing up all my Cirripedes. "Began sorting notes for Species Theory."


March-April: Experiments on the effect of salt water on seeds. Papers on Icebergs and on Vitality of Seeds.


May 14th: "Began, by Lyell's advice, writing Species Sketch" (described in "Life and Letters" as the "Unfinished Book").

December 16th: Finished Chapter III. Paper read to Linnean Society, On Sea-water and the Germination of Seeds.


September 29th: Finished Chapters VII. and VIII.

September 30th to December 29th: Working on Hybridism. Paper on the Agency of Bees in the Fertilisation of Papilionaceous Flowers.


March 9th: "Finished Instinct chapter."

June 18th: Received Mr. Wallace's sketch of his evolutionary theory.

July 1st: Joint paper of Darwin and Wallace read at the Linnean Society.

July 20th to July 27th: "Began Abstract of Species book," i.e., the "Origin of Species," at Sandown, I.W. Paper on Bees and Fertilisation of Flowers.


May 25th: Began proof-sheets of the "Origin of Species."

November 24th: Publication of the "Origin": 1250 copies printed.

October 2nd to December 9th: At the water-cure establishment, Ilkley, Yorkshire.


January 7th: Publication of Edition II. of "Origin" (3000 copies).

January 9th: "Looking over MS. on Variation." Paper on the Fertilisation of British Orchids.

July and again in September: Made observations on Drosera. Paper on Moths and Flowers. Publication of "A Naturalist's Voyage."


Up to July at work on "Variation under Domestication."

April 30th: Publication of Edition III. of "Origin" (2000 copies).

July to the end of year: At work on Orchids.

November: Primula paper read at Linnean Society. Papers on Pumilio and on Fertilisation of Vinca.

Charles Darwin

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