The internal structure of fossil vegetables found in the carboniferous and oolitic deposits of Great Britain. Described and illustrated / By Henry T.M. Witham.

  • Witham, Henry T. M. (Henry Thornton Maire)
Date:
1833
Catalogue details

Licence: Public Domain Mark

Credit: The internal structure of fossil vegetables found in the carboniferous and oolitic deposits of Great Britain. Described and illustrated / By Henry T.M. Witham. Source: Wellcome Collection.

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    Figs. 7, 8, 9. Also represent similar sections of the Weymouth Fine, On examining other species of Conifera?, we find the same general ap- pearances, with slight modifications. It is therefore an essential character of these trees, that the walls of the elongated cellules, when viewed on the sides next to the medullary rays, should present a single series of globules or circular pores, and that the other sides of these cellules, or those facing the bark, and the pith should be compact and uniform. 1 he Cycadeae are said to be the only plants known to resemble the Coniferae in these respects; but as I have not been able to procure speci- mens of them for examination, I am unable to say any thing of importance respecting their structure.