A terrella Size:L: 70 x 70cm Firle Hill Climb

Firle Hill Climb

The issue of slavery was coming to the forefront of the differences between North and South

View west towards London Bridge and St Paul's Cathedral from a boat moored near the Tower of London

View of Billingsgate wharf with oyster boats

Inscribed below: 'WOLSTHORPE

A terrella Size:L: 70 x 70cm Firle Hill ClimbA terrella ('little earth') is a sphere made of a magnetized substance, used to simulate the magnetic field of the earth. In the 16th century the English physician William Gilbert used a terrella made out of lodestone (a naturally occurring magnetized mineral) to demonstrate that the earth is magnetic, and to explain how mariner's compasses work. 17th century