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Many marine animals seem to have this power of stinging: besides the Portuguese man-of-war, many jelly-fish, and the Aplysia or sea-slug of the Cape de Verd Islands, it is stated in the "Voyage of the Astrolabe" that an Actinia or sea-anemone, as well as a flexible coralline allied to Sertularia, both possess this means of offence or defence.
Many marine animals seem to have this power of stinging: besides the Portuguese man-of-war, many jelly-fish, and the Aplysia or sea-slug of the Cape de Verd Islands, it is stated in the voyage of the Astrolabe, that an Actinia or sea-anemone, as well as a flexible coralline allied to Sertularia, both possess this means of offence or defence.
Not so fast, my friend; you have not studied what is still under the covering skin and hidden in the living animal. I have, however, prepared a slide with this membrane removed and there you can observe the different parts, and learn that each one of these alcoves contains a complete animal, and not merely one among many mouths, like the polyp on Sertularia.
In the larger Sertularia the whole branched tree is connected by jelly threads, running through the stem, and all the thousands of mouths are spread out in the water. One large form called Sertularia cupressina grows sometimes three feet high and bears as many as a hundred thousand cups, with living mouths, on its branches.
On that leg grows, amid another copse of the grey polypes, a delicate straw-coloured Sertularia, branch on branch of tiny double combs, each tooth of the comb being a tube containing a living flower; on another leg another Sertularia, coarser, but still beautiful; and round it again has trained itself, parasitic on the parasite, plant upon plant of glass ivy, bearing crystal bells, each of which, too, protrudes its living flower; on another leg is a fresh species, like a little heather-bush of whitest ivory, and every needle leaf a polype cell let us stop before the imagination grows dizzy with the contemplation of those myriads of beautiful atomies.
Millepora alcicornis lives in from 0 to 12 fathoms, and the genera Madrepora and Seriatopora from 0 to 20 fathoms. Mr. SERTULARIA, 40, Cape Horn 66. CELLARIA, 40, Cape Horn 66. CELLARIA, A minute scarlet encrusting species, found living, 190, Keeling Atoll, 12. CELLARIA, An allied, small stony sub-generic form, 48, St Cruz Riv. 50.
Cosmarium binoculatum. 34. Cyclops quad. 35. Cyphroderia amp. 36. Cypris tristriata. 37. Daphnia pulex. 38. Diaptomas castor. 39. " sull. 40. Diatoma vulgaris. 41. Difflugia cratera. 42. " globosa. 43. Dinobryina sertularia. 44. Dinocharis pocillum. 45. Dirt. 46. Eggs of polyp. 47. " entomostraca. 48. " plumatella. 49. " bryozoa. 50. Enchylis pupa. 51. Eosphora aurita. 52. Epithelia, animal. 53.
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