Perpetual Motion 



panying his majesty and the Duke of Richmond, D. Hamilton 

 and most of the court attending him. The wheel was fourteen 

 feet over and forty weights of fifty pounds apiece ; Sir William 

 Belfort, Lieutenant of the Tower, and yet alive, can justify it with 

 several others. They all saw that no sooner had these great 

 weights passed the diameter line of the upper side but they hung 

 a foot further from the centre, and no sooner passed the diameter 

 line of the lower side but they hung a foot nearer. Be pleased to 

 judge the consequence." 



Fig I. — Gravity Wheel. Weighted Levers. 



Now it is very certain that this wheel never moved of itself, and 



yet the Marquess of Worcester was a man of lofty character and 



the highest honour, a man of scientific skill and learning who had 



done noble service for the King. It is a singular problem in 



