A series of letters by Charles Lyell to Miss Mary Horner, his fiancee, later his wife - and also some from Mary to Charles - both before and after their marriage. After originally being married in Bonn, Germany, Charles and Mary were married again at Kirriemuir on the 28th September 1832. The earlier dated letters are voluminous and detailed. Their number lessens over time, due to the Lyell's being together always:
1) 4th August 1831 - 25th October 1831
2) 1st November 1831 - 21st December 1831
3) 29th December 1831 - 10th February 1832
4) 13th February 1832 - 30th April 1832
5) 1st May 1832 - 12th June 1832
6) 1840 - 1849
7) 1850 - 1854
8) 1855 - 1859
9) 1860-1864