The history of creation, or, The development of the earth and its inhabitants by the action of natural causes : a popular exposition of the doctrine of evolution in general, and of that of Darwin, Goethe and Lamarck in particular / from the German of Ernst Haeckel ; the translation revised by E. Ray Lankester.

Date:
1876
Catalogue details

Licence: Public Domain Mark

Credit: The history of creation, or, The development of the earth and its inhabitants by the action of natural causes : a popular exposition of the doctrine of evolution in general, and of that of Darwin, Goethe and Lamarck in particular / from the German of Ernst Haeckel ; the translation revised by E. Ray Lankester. Source: Wellcome Collection.

Provider: This material has been provided by the Royal College of Physicians of Edinburgh. The original may be consulted at the Royal College of Physicians of Edinburgh.

    911/938 (page 385)
    (4), with short, finger-shaped branches (vol. ii. p. 139). Behind it, below on the left (5), is a very large marine rose (Actinia), a single individual from the jclass of six-rayed corals (Hexacoralla, vol. ii. p. 143). Its low, cylindrical body has a crown of very numerous and large leaf-shaped tentacles. , Below, in the centre of the ground (6), is a sea-anemone (Cereanthus) from the group of four- fold corals (Tetracoralla). Lastly, on a small hill on the bottom of the sea, there rises, on the right above the corals (1) a cup-polyp (Lucernaria), as the representative of the stalked- jellies. (Podactinaria, or Calycozoa, vol. ii. p. 144.) Its cup- shaped, stalked body (7) has eight globular clusters of small, knotted tentacles on its rim. Among the swimmuig Zoophytes which occupy the upper half of Plate YII., the hydromedusse are especially remarkable, on account of their alteration of generation. (Compare vol. i. p. 206). Directly above the Lucernaria (7) floats a small tiara jelly (Oceania), whose bell-shaped body has a process like a dome, the form of a papal tiara (8). From the opening of the bell there hangs a wreath of very fine and long tentacles. This Oceania is the offspring of a tube-polyp, resembling the adhering Tubularia below on the left (3). Beside this latter, on the left, swims a large but very delicate hair-jelly (^quorea). Its disc- shaped, slightly arched body is just drawing itself together, and pressing water out of the cavity of the cup lying below (9). The numerous, long, and fine hair-like tentacles which hang down from the rim of the cup are drawn by the ejected water into a conical bunch, which towards the centre turns upwards like a collar, and is thrown into folds. Above, in the middle of the cavity of the cup, hangs the stomach, the mouth of which is surrounded by four lobes. This ..^quorea is derived from a small bell-polyp, resembling the Campanularia (2). The small, slightly arched cap-jelly (Eucope), swimming above in the centre (10), is likewise derived from a similar beU-polyp. In these three last cases (8, 9, 10), as in the majority of the hydromedusse, the alternation of generation consists in the freely swimming medusa (8, 9, 10), arising by the formation of buds (therefore by non-