. The cyclopædia of anatomy and physiology. Anatomy; Physiology; Zoology. Patella. B. Portion inclosed between the lines c and d, magnified to show a, a, the branchial la- minae, and b, b, the circular border of the mantle. laminae (a, «) attached within the circular border of the mantle (b, b). The currents pass inwards from the edge of the mantle to the gills, then over the surface and along the border of each branchial lamina, from its outer or lower to its inner or upper edge, as indicated in the figure by the arrows. In the Limpet the ciliary motion is also found on the inner surface of t
. The cyclopædia of anatomy and physiology. Anatomy; Physiology; Zoology. Patella. B. Portion inclosed between the lines c and d, magnified to show a, a, the branchial la- minae, and b, b, the circular border of the mantle. laminae (a, «) attached within the circular border of the mantle (b, b). The currents pass inwards from the edge of the mantle to the gills, then over the surface and along the border of each branchial lamina, from its outer or lower to its inner or upper edge, as indicated in the figure by the arrows. In the Limpet the ciliary motion is also found on the inner surface of the alimentary canal. In the Chiton or Oscabrion (Jig. 303), the only other genus of this order, the gills are situated as in the Limpet, but are of a more complex structure. Each consists (at least in the species examined by me) of a triangular lamina, with a series of smaller laminae set on each side of it, Fig. 303. diminishing in size as they approach its point. The currents on each of the gills are directed towards its apex, and also pass between the secondary laminae over their surface and along their edges : a, a, are the gills ; b one of the gills magnified, showing its laminae; Chiton. c the same viewed endwise. The arrows mark the direction of the currents. c. Pectinibranchiata.— The common Buc- cinum (Jig. 304) may serve as an example of Fig. 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 Todd, Robert Bentley, 1809-1860. London, Sherwood, Gilbert, and Piper
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