A history of the British sea-anemones and corals / by Philip Henry Gosse.

  • Philip Henry Gosse
Date:
1860
Catalogue details

Licence: Public Domain Mark

Credit: A history of the British sea-anemones and corals / by Philip Henry Gosse. Source: Wellcome Collection.

    47/436 page 1
    BRITISH SEA-ANEMONES. GENERAL DESCRIPTION AND EXPLANATION OF TERMS. As it is of great importance in scientific description to employ precise terms for the various parts of the objects described, and for the conditions of those parts, and to use the same terms always in the same sense, I here define the terms which I propose to use in this work. The principal parts of the body of a Sea-Anemone are the following :—the base ; the column ; the disk ; the tentacles ; the mouth ; the cavity. 1. The Base (Basis). This is the lowest part of the animal, usually forming a flat area, by means of which it adheres to other bodies. It is often expanded (expansa), its outline being consi- derably broader than a section of the column. In some cases, as in Edwardsia, it becomes very small, loses its function, and finally, as in Cerianthus, disappears. In Adamsia, it is greatly extended laterally into two wings, which, curving round, meet and unite by their edges, forming a complete circle. This form of base may be distinguished as ANNULAK (annularis). B
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