. The Annals and magazine of natural history; zoology, botany, and geology. Natural history; Zoology; Botany; Geology. 128 Mr. H. J. Carter on the thus alters considerably its general appearance externally as well as the structure internally. Lastly, the colour under drying, as before stated, may fade in part or altogether. Still there are some things in a sponge which are seen better when dry than when fresh. Such difficulties beset no other classification in natural history. But what is to be expected otherwise, when, in addition to this, the protean character of the sponge, whose transforma
. The Annals and magazine of natural history; zoology, botany, and geology. Natural history; Zoology; Botany; Geology. 128 Mr. H. J. Carter on the thus alters considerably its general appearance externally as well as the structure internally. Lastly, the colour under drying, as before stated, may fade in part or altogether. Still there are some things in a sponge which are seen better when dry than when fresh. Such difficulties beset no other classification in natural history. But what is to be expected otherwise, when, in addition to this, the protean character of the sponge, whose transformations are endless in the soft parts, and only ap- proached in number by being stereotyped in ihe harder ones, is considered ? Hence the unsatisfactory and indefinite cha- racters, especially of the families, which will be found in the following classification. Class SPONGIDA, Huxley. Order I. CARNOSA. Without evident skeleton*. Order II. CERATINA. Fio-. Fibre of Ceratiua: a, horny fibre; b, core ; c, transverse section of fibre, showing concentric laminar structure around the core ; d, bud of fibre. Possessing a skeleton composed of horny fibre with a granu- lar, chiefly hollow, core, containing for the most part no foreign bodies. * Here and henceforth it should be remembered that the diagnoses respectively refer to the general characters. And as regards priority iu my Classification, it must be considered quite empirical. But that fibre- less spiculeless sponges might pass by gradation into fibrous spiculous ones I have no other grounds to go Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original London, Taylor and Francis, Ltd
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