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Volume 5 - December 1888

Contents

Page 6 of 11

Reviews

Notices of Memoirs

  • Notices of Memoirs

  • Published online by Cambridge University Press:
    01 May 2009, pp. 316-319
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Original Articles

  • IX.—Notes on the Nomenclature of the Fishes of the Old Red Sandstone of Great Britain

  • R. H. Traquair
  • Published online by Cambridge University Press:
    01 May 2009, pp. 507-517

  • The nomenclature of the fishes of the Old Red Sandstone of Great Britain, with the exception of the Cephalaspidæ, revised some years ago by Professor Lankester, is at present in a very unsatisfactory state. A vary large number of the species named by Agassiz, as well as by McCoy, were undoubtedly founded upon deceptive characters, due partly to different modes of preservation in different rocks, partly also to those apparent variations in external form, which are inevitable in such ancient fossil fishes devoid of a fully ossified internal framework, without which the original outline cannot be expected to be constantly preserved. In specimens from one locality the external ganoid surface of the scales may be well shown, in those from another it may be constantly hidden or obscured, while the proportional measurements in the very same species may vary infinitely, by the fish being lengthened out, or shortened up by changes, which have occurred after death or during the consolidation of the enclosing rock. These and kindred sources of fallacy can only be guarded against by long experience in deciphering such remains, coupled with the examination of an immense number of specimens.

Reviews

Correspondence

  • Note on a Glacial Bed in Bedfordshire

  • A. S. Eve
  • Published online by Cambridge University Press:
    01 May 2009, pp. 479-480
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Correspondence

  • Discovery of a Cirripede in Canadian Palæozoic Rocks

  • Arthur H. Foord
  • Published online by Cambridge University Press:
    01 May 2009, p. 480
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Reviews

Notices of Memoirs

  • Notices of Memoirs

  • A.S.W.
  • Published online by Cambridge University Press:
    01 May 2009, pp. 517-520
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Correspondence

  • The Atomsphere of the Coal-Period

  • Joseph Prestwich
  • Published online by Cambridge University Press:
    01 May 2009, pp. 238-239
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Original Articles

  • X.—On the Occurrence of a Glaucophane-bearing Rock in Anglesey

  • J. F. Blake
  • Published online by Cambridge University Press:
    01 May 2009, pp. 125-127

  • The occurrence of glaucophane has not, I believe, been previously noted in Great Britain, and as it is a mineral of some interest, my friend Mr. Teall has suggested that a separate notice of it should be given. It would otherwise be naturally described in the Report on the Microscopic Structure of Anglesey Rocks to be presented to the British Association at their forthcoming meeting.

Page 6 of 11