XX OUTLINE OF CHARLES DARWIN'S LIFE 



1845. April 25th to Aug. 25th : Working at second edition 



of Naturalist's Voyage. 



1846. Oct. 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. 



1847. Working at Cirripedes. 



Review of Waterhouse's Natural History of the 

 Mammalia. 



1848. Mar. 2Oth ; Finished Scientific Instructions in Geology 



for the Admiralty Manual. 

 Working at Cirripedes. 

 Paper on Erratic Boulders. 



1849. Health especially bad. 

 Working at Cirripedes. 



Mar.- -June : Water-cure at Malvern. 



1850. Working at Cirripedes. 



Published Monographs of Recent and Fossil Lepadidae. 



1852. Working at Cirripedes. 



1853. Nov. 3Oth : " Royal Medal given to me." 



1854. Published Monographs on Recent and on Fossil 



Balanidae and Verrucidae. 

 Sept. 9th : Finished packing up all my Cirripedes. 



" Began sorting notes for Species Theory." 



1855. Mar. April: Experiments on the effect of saltwater 



on seeds. 

 Papers on Icebergs and on Vitality of Seeds. 



1856. May I4th : "Began, by Lyell's advice, writing Species 



Sketch ' (described in Life and Letters as the 



"Unfinished Book"). 

 Dec. 1 6th : Finished Chap. III. 

 Paper read to Linnean Society, On Sea-water and the 



Germination of Seeds. 



1857. Sept. 29th : Finished Chapters VII. and VIII. 

 Sept. 3Oth to Dec. 29th : Working on Hybridism. 

 Paper on the Agency of Bees in the Fertilisation of 



Papilionaceous Flowers. 



1858. March 9th : " Finished Instinct chapter." 

 JuneiSth: Received Mr. Wallace's sketch of his 



evolutionary theory. 



