In 1830, De la Beche published "Sections and views, illustrative of geological phaenomena", a series of line drawings to encourage more accurate depictions of geological formations. He also published numerous memoirs on English geology in the "Transactions of the Geological Society of London", as well as in the "Memoirs of the Geological Survey", notably the "Report on the Geology of Cornwall, Devon and West Somerset" (1839). He likewise wrote "A Geological Manual" (1831; 3rd ed., 1833); and "Researches in Theoretical Geology" (1834), in which he enunciated a philosophical treatment of geological questions much in advance of his time. An early volume, "How to Observe Geology" (1835 and 1836), was rewritten and enlarged by him late in life, and published under the title of "The Geological Observer" (1851; 2nd ed., 1853).