The Correspondence: François Antione Alfred Lacroix to Edwin Ray sub-series consists of:

Drawings and notes on the geology of Ireland and Lowland Scotland, particularly Fife and the Ochills, and also of the Isle of Man. References are made to crystalline rocks at Donegal, clays at Sligo and Elie, shale at Dura Den and Blebo (both Fife) and marine terraces at Kincraig (near Elie).

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.