| Description | Contains eleven figures.
Subject: Geology
Relates to 'An enquiry into the original state and properties of spars, or crystals found in the Cornish mines, called Cornish Diamonds. In a letter to Emanuel Mendez da Costa, Esq; F. R. S. From the Rev. Mr. Wm. Borlace.' by William Borlase
Read 3 May 1750 |