Scope and Contents
Autograph Letter Signed from William Thomson to Cardinal Stefano Borgia in Rome, discussing the properties of a newly-discovered flexible stone from Brazil (probably Itacolumite, a stone which is flexible when cut into thin strips, and which is found in Minas Gerais, Brazil. It is associated with the presence of diamonds.) and providing an Italian translation of part of James Hutton's paper on the subject. Letter in Italian, dated 13 August 1797.
13 August 1797