This brown leather notebook contains pencil notes, sketches with labels, artistic sketches, long form essays on geological phenomena, mostly focused on the Pyrenees region and the Canary Islands. This notebook has an inserted index, attached to the binding - by Lyell or someone else? - with thick black thread.

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, Earthq[uake] ref[erence] to books on,
p. 3, Bagnieres section
p. 5, Bagnieres to Valee d'Aure, d[itt]o
p. 6, Aaure, R. to Gavernere, d[itt]o
p. 8, Gavernere, Colum[nular] appearance of limestone (vertically fissured?0
p. 10, Cinque, an anc[ient] bay?
p. 10, Tertiary, its app[earn]ce at a distance
p. 14, Limest[one] enorm[ou]s coil in
p. 16, Sarradetz, sect[ion] in the valley of
p. 18, Roland, breccia
p. 20, La valley d'Anisgne, sect[ion]
p. 22, Orlando breach, sections
p. 28, 26, Mont Perdu, view of
p. 28, 26, Vale of desol[utio]n, view in the
p. 30, Ravine at foot of M[ont] Perdu
p. 30, Breche de Roland, sect[ion]
p. 32, Cabane, M[ont] Perdu
p. 34,36,37,39, Sections, d[itto]
p. 39, Limest[one] beds W[est] of Cabanes
p. 40,42,44, Sections d[itt]o
p. 44, Diag[ona]l lamina, second[ary] clay slate
p. 48, Orlando's Breach, view
p. 50,52, Veins crossing each other
p. 52, Section of clay slate, hill W[est] of Mount Sequinat
p. 56, Breche de Roland to hill of Sequinat, section
p. 58. Cinque de Gavernere
p. 60, Section by River Gave de Pau
p. 62, Mont Perdu + Orlando's breach, section
p. 64, Mica schist, sect[ion] of its lamin[atio]n above St. Sauvert
p. 65, Barege, deep narrow ravine section of described
p. 65, [Barege], re-excav[atio]n of valley
p. 66, Vallee de Bastane, above Barege, drawing of
p. 68, Lake basins
p. 70, Contortions in block of Mica schis, Pyrenees
p. 72, Bagnieres on Big. section
p. 74, Bonanent, limest[one] quarry
p. 74, Bonanent breccia in middle of lamin[ate]d beds
p. 78, Gedre, view from hill above, tertiary exactly like sea
p. 80, Bagnieres, Poussac [et cetera] sect[ion]
p. 80, Tournay, section
p. 82, Escaladuz to Bagnieres, d[itt]o
p. 84, Protalluvial plateau in valley of the Adour
p. 86, Aure, R. sect[ion] from Saran-colin to Mauvais Indes
p. 88, La Bassere, marble, slate
p. 90, Limest[one] hills + slate alternate
p. 92, Plateaux + irrig[ation] in Pyrenees
p. 94, Gave de Paux section
p. 98,100,96, Lake plateaus
p. 108, Ripple mark, how formed Brecciated limestone
p. 108, Sandstone Pyrenees
p. 109, Monnein to Pau, section
p. 111, Monnein tertiary section at,
p. [...] Lamin[ation] of sandst[one] [...]
INDEX CONTINUED
p. 112, Navarres, lamin[atio]n of sandstone at,
p. 113, [Navarres] ripple mark at
p. 115, Monnein, Navarres + Mollon, section
p. 116, Sandst[one] lamin[ation] of sect[ion]
p. 117, Moleon to St Palais, sect[ion]
p. 117, Moleon trans[ition] schist cut thro' by river, 15 [feet]
p. 118, Moleon by river, 15 f[ee]t
p. 119, Plateaus in Pyrenees
p. 120, Cortort[ion] at Gave de Surzon
p. 120, Curves in Transition beds
p. 121, Lamination " "
p. 113,121,124,129,132, Ripple mark
p. 122, Supap[...] + Crag
p. 127, St. Palais to Orthes, sect[ion]
p. 128, Orthes, ripple mark
p. 129, [Orthes] section at; " "