1838.
Worked at the Geology of South America and Zoology of Voyage. "Some little species theory."
March 7th: Read paper on the Connexion of certain Volcanic Phenomena and on the Formation of Mountain Chains, to the Geological Society.
May: Health began to break down.
June 23rd: Started for Glen Roy. The paper on Glen Roy was written in August and September.
October 5th: Began Coral paper.
November 11th: Engaged to be married to his cousin, Emma Wedgwood.
December 31st: "Entered 12 Upper Gower Street."
1839.
January 29th: Married at Maer.