A description of certain stones figured like plants, and by some observing men esteemed to be plants petrified: Communicated to the Publisher by the same Mr. Lister, from York Novemb. 4th. 1673.

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Abstract
Sir, In this paper I send you an Account of some of the Parts of certain Stones figured like Plants; which Agricola (5° Fessilium) calls Trochitœ, and the compound ones Entrochi; we in English, St. Cutberds beads.