Plate 1 from F.C.S. Roper's On the Genus Biddulphia and its affinities (1859) British Diatomists of the 19th Century:

F.C.S. Roper
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  • Some observations on the Diatomaceae of the Thames. (1854)
          Plate 1

  • Notes on some new species and varieties of British marine      Diatomaceae. (1858)
          Plate 1

  • On the genus Biddulphia and its affinities. (1859)
         Plate 1     Plate 2


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