Discusses experiments has been undertaking on amalgams which could be used in making bells. Sends samples from bells made of pure sheet copper, and one made from sheet copper mixed with brown earth and charcoal.
Dated at: Lancaster.
Discusses experiments has been undertaking on amalgams which could be used in making bells. Sends samples from bells made of pure sheet copper, and one made from sheet copper mixed with brown earth and charcoal.
Dated at: Lancaster.