The Principles of Petrology by G W Tyrrell
1930. Second edition. 349 pages. No dust jacket. Green cloth with gilt titles to spine. From the Methuen's Geological series. Includes various diagrams. Pages have slight foxing, tanning and minor thumbing. Occasional minor marginalia and underlining. Pencil inscriptions to front endpaper and both pastedowns. A few dog-eared corners. Text block edges very foxed. Boards have some moderate edge wear, with slight bumping to corners and minor bumping to spine ends. Boards a little rubbed and marked overall. Gilt is bright. Book has a moderate forward lean.