On Certain Fossil Plants from the Hempstead Beds of the Isle of Wight

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Abstract
Introduction Geologists are perhaps aware that not long since a systematic and careful exploration was made of the deposit of lignite, clay, and sand at Bovey Tracey in Devonshire, in the hope of determining its age; that a large number of fossil plants, of various kinds, were found, and all submitted to the Rev. Dr. O. Heer, Professor of Botany at Zurich; and that two papers, embodying the results of the investigation, were recently presented to the Royal Society. From Professor Heer's determinations, it appears that forty-nine species of fossil plants occur in the Bovey beds, of which twenty-nine are new to science, whilst the remaining twenty "are well-known Miocene forms of Continental Europe; that, following the subdivision of the Miocene beds adopted by some geologists on the Continent, sixteen of the twenty species occur in the Tongrian or lowest stage, nineteen in the Aquitanian, twelve in the Mayencian, five in the Helvetian, and eight in the Oeningian; that those common to the Aquitanian and any other stage are found, in almost every instance, in a greater number of localities in the former than in the latter, and in only one case (that of Vaccinium acheronticum , Ung.) in fewer; and that the only one of the twenty species ( Celastruz pseudoilex , Ett.) not found in the Aquitanian stage occurs in the Tongrian below and the Mayencian above, but only in a single locality in each, and may therefore be looked for, sooner or later, in the Aquitanian also. Accordingly the Bovey

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