XI. An extract, by Philip Henry Zollman, Esq; F. R. S. of a philosophical account of a new opinion concerning the origin of petrifactions found in the earth, which has been hitherto ascribed to the universal de­luge; as contained in an Italian book, inti­tled, De Crostacei ed altri marini corpi che se trovano su' monti, di Anton. Lazzaro Moro, Venice 1740. communicated together with several remarks, by Dr. Balthasar Ehrhart, Physician in Ordinary at Memmingen, and Member of the Acad. Nat. …