Darwin continued to research and extensively revise his theory while focusing on his main work of publishing the scientific results of the Beagle voyage. He tentatively wrote of his ideas to Lyell in January 1842; then in June he roughed out a 35-page "Pencil Sketch" of his theory. Darwin began correspondence about his theorising with the botanist Joseph Dalton Hooker in January 1844, and by July had rounded out his "sketch" into a 230-page "Essay", to be expanded with his research results and published if he died prematurely. COUNT 5
QSN1 Who did Darwin write his ideas to in 1842? ANS1 Lyell QSN2 What was the name of Darwin's 35-page writing of his theory? ANS2 "Pencil Sketch" QSN3 Which botanist did Darwin begin a correspondence with about his theories? ANS3 Joseph Dalton Hooker QSN4 What information was Darwin's essay based on? ANS4 scientific results of the Beagle voyage QSN5 How many pages had Darwin's sketch grown to in 1844? ANS5 230-page