I have been lucky enough to review several books by Dunedin – the others being on palaeontology, geology and volcanology. And this is as good as the others. However, it is not an easy book to read. The illustrations are, as always, superb – colourful and clear – but this book is more suitable for the more mathematically and scientifically minded, especially those who enjoy the science of engineering.

The Dalradian is a geological term describing a series of metamorphic rocks, typically in the high ground lying southeast of the Great Glen of Scotland. It was named after the old Celtic region of Dál Riata (Dalriada) by the geologist, Sir A Geikie, in 1891, and the term now covers a range of metamorphic rocks.