Drawings and notes on the geology of areas of Scotland, including Aviemore, Inverness, Schehallion and parts of Fife, and to a lesser extent locations around Auvergne, France, with a list of excursionists who went there. References are made to raised beaches at the Firth of Tay, a fault line at St Monans, limeworks at Ceres, erosion near Wormit and necks at St Andrews.

Notes for 4 lectures on the 'Volcanic History of Britain', given to the Royal Institution in 1886. Sir Archibald Geikie looked at the emergence of types of geological formations against a geological timeframe and how they have been affected by various processes, especially the action of volcanoes and materials produced by them, within the natural world. He used examples from numerous locations from different parts of the British Isles.