Small red leather soft cover notebook, marbled end papers, paginated in handwritten ink. Front cover marked as 'Madeira & Canaries'.This notebook records discussions, reading, drawings and copy letters (in Mary's writing) made whilst with Hartung at Swingenberg, Germany, and working through the Canary Islands publication, making revisions or notes, especially on volcanoes, lava slopes, elevations and upheaval. Many pages written in pencil. Blank from page 89 onwards.

This notebook has no index. Contents are summarised as:
p. 1 Begins at Swingenberg with Hartung. Discussion of Azores.
p. 4 Scrope's Volcanoes
p. 8 Erratics
p. 11 Double page drawing showing layout of islands and heights - credited as Vidal 1843-4
p. 12 Trap, Trachiidolerite [sic trachydolerite], Trachbyte
p. 14 Graystoun, Pico, Flores
p. 22 Fayal valley
p. 23 Funchal
p. 40 Vidal
p. 42 Palma
p. 79 with Wollaston, extinct shells
p. 80 copied letter from James Yate Johnston, at Madeira April 28th 1859. refers to work by Wilheim Reiss
p. 85 copy of letter from Lyell to Mr. Piazzi Symth 16th May 1859. on fossil shells found on Madeira. Lyell queries Smyth's reference to the location of found shells, quoting his own experience 'as far as I & Mr Hartung & our friends in Teneriffe have learnt'.