Lecture on the moon
Visit the Duke of Argyll
Basaltic formation at Mull
The Giant's Causeway
The great exhibition
Steam hammer engine
Prize medals
Interview with the Queen and Prince Consort
Lord Cockburn
Visit to Bonally
D. O. Hill


CHAPTER 19 More about Astronomy
Sir David Brewster
Edward Cowper's lecture
Cause of the sun's light
Lord Murray
Sir T. Mitchell
The Milky Way
Countless suns
Infusoria in Bridgewater Canal
Rotary movements of heavenly bodies
Geological Society meeting
Dr Vaugham
Improvement of Small Arms Factory, Enfield
Generosity of United States Government
The Enfield Rifle