This black leather notebook contains Lyell's notes on current scholarship from other well-known natural history colleagues, including Darwin, Deshayes, Blackadder, Owen, and more. Notes are made in pencil and ink with some sketches. The index is pasted to the back cover, and the front cover is blank. This notebook has a reference in the index on page 56, to 'Darwin St Helena Shells' which links to a specimen held by the Cockburn Geological Museum reference EUCM.0180.2013.

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, Arran sect[ion] near Clackland
p. 1,2,63 Dikes near Brodick
p. 4,6, Theory
p. 4,6, Muil Down
p. 8, Usquenaver waterfall
p. 9, Lamlash, sect[ion] above
p. 10, [Lamlash] sect[ion] in island of,
p. 14, [Lamlash] elevated beach
p. 17, [Lamlash] alluv[ium] in valleys
p. 12, Sandstone turned to quartz
p. 16, Vein of greenst[one] at Kildman
p. 17,31, Inland Cliffs,
p. 17, Whiting Bay, trap dikes in,
p. 17, [Whiting Bay] inland cliffs in,
p. 18, Clackland sections
p. 23, Corry, dikes in limestone
p. 21,22, [Corry] bed of Producta Scotica
p. 21, Arran marbles above fossiliferous strata
p. 24,26, Tornignon, junct[ion] of granite + schist at,
p. 28, Newton, section,
p. 30, Murchison + Sedgwick on Arran,
p. 31-33, Geol[ogy] of Arran + Forfar, analogy + want of analogy
p. 33, Cleavage + Stratification, coincidence of in quarry near Loch Ranza
p. 34, Dalmuir shells
p. 37 Blackadder on Barry shells
p. 38, Barry Sands,
p. 45, Kiener's work on Shells
p. 44,46, "Principles of Geol[ogy]" title [et cetera] for 6th Ed[ition] in 2 Parts
p. 71,74, ["Principles of Geology"] increase of pages, cuts, + Plates in 3rd 4th + 5th Ed[itions]
p. 47,71,72,86, "Supplement", title for,
p. 60, "Elements", [title for]
p. 48, Nilsson [sic] on subsidence in Scania
p. 49,50,52,53-55,59,61,63,65,82,83,87, Mem[oranda]
p. 53,57, Owen on Cephalopoda
p. 90, [Owen] on Enaliosauri, notes
p. 56, Darwin, St. Helena shells,
p. 69, [Darwin] notes on his paper
p. 89,101,102,105,108,109,111,112,113, [Darwin] Mem[oranda] of + for,
p. 57, Crawfurd on range of humming birds
p. 58, Octopods + Decapods
p. 62,80,81,88, Anniv[ersary] Address, time taken by
p. 93, [Anniv[ersary] Address], to whom given
p. 63,66, Beck, Dr. Mem[oranda] for,
p. 67,68, Identif[ication] of Species, mem[oranda] on,
p. 74, [Identification of Species] Deshayes on modifying his opinions respecting
p. 66, Ehrenberg on Infusoria ref[erence]
p. 67, Barclay on Dentalium
p. 74,93, Murray's Account
p. 75,76,78, Waverly Geology
p. 85, Morris on Woolich beds,
p. 93, "Princ[iples] of Geol[ogy]" 5th Ed[ition] to whom given
Addresses
p. 63,81,87,110,91,92,96,100,104