This brown leather notebook contains mostly sketches with accounts of letters received or written, and hasty descriptions of geological theories pertaining to Bordeaux, the Pyrenees, and parts of Spain. The cover is blank, and the index is a page adhered to the back cover.

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. 1, Pebbles increase in size from Toulouse to Pyrenees
p. 3, Toulouse to Pamiers, sect[ion]
p. 5, Crampagnat to Vertuilles, D[itt]o
p. 7, Vertilles, sect[ion] n[ea]r Arregerwer
p. 10, Foix plateau, section
p. 12, [Foix] vert[ical] limest[one] in the valley by the Arrige, near
p. 16, Mirepoix section
p. 17, Foix to Carla
p. 19, Dolomite + breccia, bet[wee]n d[itt]o
p. 19, Nummulites + anilliolites in upper beds of D[itt[o
p. 23, Shelly strata; near Carla
p. 25, Mirepoix beds
p. 25, Valley of Duefoire, sect[ion]
p. 26, Plateaus bet[wee]n Mirepoix and Brignolles
p. 26, Saint Felice, tert[iary] conglom[erates]
p. 28, Foix to Varilkes, sect[ion]
p. 30, Red beds with Medit[erranea]n breccia
p. 31, Ufset to Foix, section
p. 33, [Ufset] cave in limest.
p. 34, Landslips, towns buried by
p. 35, Alluvion, Protalluv[io]n, defined
p. 36, Cavanes, section near
p. 38, Section, Ospitalet, Merens Ax.
p. 40, Gorges, theory of their partial obstruct[ion] by earthq[uak]e
p. 42, Ure, Portet, Ospitalet, sect[ion]
p. 44, Lignite of Puycerda basin
p. 45, Lignite worked n[ea]r Estavar
p. 46, Segre, R. Estavar section
p. 46, [Segre] valley, flowst to Perpignon
p. 48, Cabanes, R. Eyne, section
p. 49, Granitic schist n[ea]r Salagousa
p. 50, Villefrance, Oolite, Cabanes, section
p. 51, Set, valley dip of the beds
p. 55, [Set] tert[iary] form[ations] near the,
p. 54, Ille, Boule, Vinc, Prades section
p. 56, Section above + near Ille
p. 58, Perpignan to Ille, sect[ion]
p. 62, [Perpignan] to Col de Pertus D[itt]o
p. 64, Tech, a line of tertiary on one side of the river
p. 65, Figueras, Spain, to Col de Pertus, France, sect[ion]
p. 67, Gerona, Orriols, R. Fluvia, Figueras, section
p. 70, Barcelona, Mr. Jony sect[ion]
p. 7?, Mr. Serrat, nummulite limest[one]
p. 7?, Basaltic col[umns] at Cast. Follit
p. 74, Fluvia, R. alluv[ial] mud of the
p. 74, Barcelona, a bay once at
p. 74,76 Besos, river, pebbles [et cetera]
p. 7?, Badelona, tert[iary] strata of
p. 79, Barcelona to Hills of Las Planas, section
p. 83, Martorell to Collbato d[itt]o
p. 84, M[ount] Serrat, fissures in
p. 84, Conglomerate in thick beds d[itt]o