Rare and remarkable animals of Scotland, represented from living subjects: with practical observations on their nature . which are older, such as theTubularia (Scrtularia) ramea, and the Sertularia (Nemertesia) ramosa, thestem having attained considerable diameter, will be found to consist ofnumerous parallel tubuli; and, in both it is quite inflexible, remaining up-right, though the smaller parts yield when unsupported by the water. Different portions of the branches of the Tubularia ramea are indentedby whorls, and especially the extremities.—PI. VIII. fig. 3. But for themost part they are f
Rare and remarkable animals of Scotland, represented from living subjects: with practical observations on their nature . which are older, such as theTubularia (Scrtularia) ramea, and the Sertularia (Nemertesia) ramosa, thestem having attained considerable diameter, will be found to consist ofnumerous parallel tubuli; and, in both it is quite inflexible, remaining up-right, though the smaller parts yield when unsupported by the water. Different portions of the branches of the Tubularia ramea are indentedby whorls, and especially the extremities.—PI. VIII. fig. 3. But for themost part they are faint or altogether obliterated: nor do these seem oneof the constant characters. The head or hydra of this product is deciduous, like the hydrse of thetwo preceding species ; also like them, it enjoys the remarkable preroga-tive of regeneration,—though perhaps for another purpose, because it isnot there that the elements of posterity reside as in the former. The duration of this most important part of its organization is inde-finite. Of 80 vigorous hydrse which embellished the specimen, Plate VII., ^J. IL \ iaAia^-yta/>. £1^1^ by C /^wnjtfK. ^UiuiX TUBULARIA. 55 when withdrawn from the sea, only 40 subsisted on the second day; 30on the third ; 12 on the sixth ; 4 on the seventh; 2 on the eighth; on thetenth there were none : the whole had fallen. This was a beautiful speci-men. It might have been circumscribed by a circle the size of a dimensions of another, alike beautiful, and more luxuriant, with thecolours finely contrasted, were no larger.—PI. X. The head survives its fall for a short time. It generally wastes awaysuddenly, without falling. Likewise its decomposition is rapid. Thoughmany have wasted or fallen in the course of a night, none are to be dis-covered at the bottom of the vessel next morning. From the transparent cylinder now remaining, the summit appears tohave been penetrated by a prolongation from below the disc: but thepoint of unio
Size: 1145px × 2184px
Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1800, bookdecade1840, booksubjectzoology, bookyear1847
