This notebook of brown leather contains geological notes on the Auvergne region. Lyell writes in a journalistic style with daily observations and descriptions, with whole page sketches and diagrams of the landscape. The inside cover is written "Mr C Lyell No. 9 Crown Office Row Temple." The front plate reads "No 2 France, Clermont Ferrand, Auvergne, May 18th to June 2nd 1828."

The following table of contents is Lyell's own words, copied from Lyell's own "Index", found at the beginning and end of the notebook, transcribed from digital surrogates using the platform Transkribus. When known, Lyell's abbreviations and contractions have been expanded using brackets []. When writing is unclear, and transcription is not possible, this is denoted using [...]. Quotation marks are Lyell's own notation for ditto, as is the abbreviation "d'o". The inclusion of [sic] indicates the misspelling of a word is deliberate and taken from the notebook.

p. 3, [...] freshw[ater]
p. 3, Mont Sughat
p. 6, Durtol
p. 7, Granite veins in granite
p. 7, Hill below Pradelle
p. 9, Gergovia
p. 18, Merdogne
p. 23, Romagne
p. 25, Current of Pariou
p. 25, Pradelle
p. 27, Puy de Dome (with 2 drawings)
p. 29, Val d' Royat
p. 31, Mt Perrier
p. 32, Chamaliere
p. 40, Ascended Pariou
p. 40, D'o. Chopine by Puy di la Goutte
p. 41, View of Puy de Dome from N.
p. 42, Pont Gibaud, cheire of Coime
p. 42, Cheire of Tournbise- ice holes
p. 45, Sioules course changed at Pont Gibaud
p. 46, Chaleuzet
p. 48, Drawings of Prenal + Com.
p. 51, Pont Gibaud to Volvic
p. 52, Volvic
p. 53, Marconi
p. 54, Spring of Aigueperse
p. 57, Gannat
p. 59, " Bleaux
p. 59, " to Vichy
p. 59, Hill of Cognat
p. 62, La Poverte
p. 63, Quarry of Marculot
p. 64, [Quarry] Boudechat
p. 64, [Quarry] Blagot
p. 68, Vichy (hot sprin) [sic]
p. 70, Quarry of Les astines
p. 70, Porph. of Cusser
p. 70, Pisolite of La Charite used by Romans
p. 76, La Doux
p. 78, Gravineire (covd with red scoria)
p. 78, Puy de Cruelle
p. 80, Gergovia
p. 81, Section of Dr. on E.S.E. side
p. 7, 1 L. Do hard capping protect hells?
p. 25, 2. Junct[io]n of lava & granite original superficca decomposition may often appear alteration
p. 29, 3. Siliceous spring M. Dor.
p. 31, 4. Highest elevation of tertiary
p. 32, 5. org[ani]c rem[ain]s from Jambert
p. 43, 6. Cherie of Come plants
p. 44, 7. Do barren like Fontainbleu grit
p. 54, 8 Eq[ui]poise spring for Daubeny