COOKWORTHY ASSIGNS HIS PATENT TO CHAMPION. 235 



this material was difficult and expensive to make, and there- 

 fore he was unable to keep pace with other manufactories, 

 and to compete with them. Add to this that he was far 



from being a young man being then in his seventieth year 

 it is not surprising that he should determine on giving 

 up the works, especially when Lord Camelford, who was 

 one of his partners, says between two and three thousand 

 pounds had been sunk in their prosecution. 



On the 6th of May, 1774, therefore, William Cookworthy, 

 for considerations set forth in the deed of assignment, sold 

 the business and patent-right to Richard Champion, mer- 



