This red leather notebook continues Charles Lyell's work on studying and listing Crag and Touraine shells and specimens, continued from notebook 74, with GB Sowerby. Lyell appears to be based solely in London in the notebook. He notes queries for colleagues and observations on other's collections - Captain Alexander, Mr Bean, Mr Colchester, and Mrs. Power's [sic Madame Jeannette Power, who is noted in the Magazine of Natural history 1839 as having formed a collection of Argonauta in 1838]. A lot of these historical collections were in time given to the British Museum. P.25 illustrates his thoughts on extinct shells on one side of the Appenines, and recent shells on Sicily. P. 46 notes sales of new editions of Principles of Geology and Elements of Geology. P. 70 lists queries to Charlesworth on illustrations and copyright. P. 89 lists of Coralline Crag fossils in Mr. Woods collection. P. 121 Lyell writes on British Shells. P. 125 is a list of Bridlington shells sent by Wm Bean, and a note to see Notebook 78. P. 109 Lyell also notes his practice of cleaning shells. The index is on p. 138-139.

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.

Index
p. 1,5-11,26,36,40-44,48-56,60-69,72-88, Sowerby, G.B. examin[atio]n of Touraine fossil shells
p. 13,30,106, -[Sowerby, G.B.] mem[oranda] for
p. 18, -[Sowerby, G.B.] price of Min. Con.
p. 20, -[Sowerby, G.B.] on Cyrenas
p. 20, -[Sowerby, G.B.] on Mrs Powers collection
p. 3,22,24,102-105, -[Sowerby, G.B.] on Superga fossils
p. 22,26, -[Sowerby, G.B.] on Cropthorn fossils
p. 109,121, -[Sowerby, G.B.] on Oliva of Worcestershire
p. 121, -[Sowerby, G.B.] on number of British shells
p. 124, -[Sowerby, G.B.] Mayence fossils purchased by
p. 13, Wood, S. Touraine fossils identified with Crag, by,
p. 28, -[Wood] on Cropthorn fossils
p. 32,34,88, -[Wood] on Crag fossils
p. 89, -[Wood] analysis of his Coral Crag fossils
p. 130, -[Wood] on London Clay fossils
Touraine fossils, examin[atio]n of - see "Sowerby"
Superga [fossils, examination of - see Sowerby] p. 22,26, Cropthorne fossils
p. 90 to 100, Touraine fossils, list of 236 species, 90 to 100
p. 27,29,46,57,122,124, Memoranda
p. 26, Sicily & Superga relations of
p. 32, Alexander, Capt[ain] on names of crag pits
p. 33, Shell collections
p. 46, Principles, copies of 6th Ed[ition] unsold
p. 20, Mrs Power's collection, notes on
p. 18, Owen, mem[oranda] for
p, 46 Featherstonhaugh, mem. for
p, 58, 59 [Featherstonhaugh on raft in Red River etc.
p. 57 Ipswich steamers
58 Paris shells, notes on
p. 101, 106, 110, 128 Loven, Dr, mem, from on shells
p, 106 Bordeaux fossils selected to compare
p. 108 Colchester, Mr. shells from
p, 109 Shells, cement for strengthening, & how to varnish & clean
p, 112 Wetherall, Mr. London Clay fossils exam[ine]d
p, 120 [Wetherall] list of his fossils retained
p. 132 [Wetherall[ examin[ation] of these
p, 125 Bridlingto fossils, list of Mr. Bean's
p, 129 Fossil shells, proposed title for work on
p, 130, 132 Headon Hills & Hordwell fossils
p, 28, 132 Climate, of Norfolk Grag [added in light pencil]