. Jelly-fish, star-fish and sea-urchins [microform] : being a research on primitive nervous systems. Nervous system; Jellyfishes; Starfishes; Sea urchins; Nerveux, Système; Méduses; Astérides; Echinides. STAR-FISH AND SEA-URCHINS. 255 position, and is called the madreporic tubercle (Fig. 32, m). Continuing our examination of tho upper surface, we may observe, when we use a lens, a number of small pincer-like organs scattered about between the calcareous nodules, or attached to the spines; these are known as the pedicellavijr". Each. Fig. .12. ri>pfmiy,:ti:n\ (From Tassoll's '• Nat. lli
. Jelly-fish, star-fish and sea-urchins [microform] : being a research on primitive nervous systems. Nervous system; Jellyfishes; Starfishes; Sea urchins; Nerveux, Système; Méduses; Astérides; Echinides. STAR-FISH AND SEA-URCHINS. 255 position, and is called the madreporic tubercle (Fig. 32, m). Continuing our examination of tho upper surface, we may observe, when we use a lens, a number of small pincer-like organs scattered about between the calcareous nodules, or attached to the spines; these are known as the pedicellavijr". Each. Fig. .12. ri>pfmiy,:ti:n\ (From Tassoll's '• Nat. lli-t,") consists of a stalk serving to support a pair of forceps or pincers, and the whole boiug provided with muscles, the stalk is al>lo to sway about and the pincers to open and shut (Fig. 33). The entire mechanism is therefore clearly adapted to seizing and holding on to something; but wliat it is that these curious organs are tlius adapted to seize, and i : '0 "1 !. 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 Romanes, George John, 1848-1894. London : K. Paul, Trench
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Keywords: ., bookcentury1800, bookdeca, booksubjectnervoussystem, bookyear1895
