Who Invented Covered Pots?

Title: 
Who Invented Covered Pots?
Author/Artist: 
Newton, R. G
Published In: 
v. 29, no. 1, Feb. 1988, pp. 49-50 Glass Technology
Subjects: 
Bib ID: 
AI21572
Notes: 
Arguments for and against the belief that "covered" melting pots were a British invention in the 17th c