. Outlines of the comparative physiology and morphology of animals. Anatomy, Comparative; Physiology, Comparative. BLOOD SYSTEM. 37 In the lowest of all fishes, if fish it may be called viz., the lancelet (amphioxus), the enormously larg. Fig. 252.—Anterior portion of a shark (CarcAartas), showing the five gil openings. throat has many—twenty or more—slits, edged with im perfect fringes (Fig. 255). Going up now the other way, in ganoids, such as th< garfish or bony pike (Lepidosteus) of our American fresl waters, and in the Polypterus of the Nile, we have ar opercle and gills like the teleo
. Outlines of the comparative physiology and morphology of animals. Anatomy, Comparative; Physiology, Comparative. BLOOD SYSTEM. 37 In the lowest of all fishes, if fish it may be called viz., the lancelet (amphioxus), the enormously larg. Fig. 252.—Anterior portion of a shark (CarcAartas), showing the five gil openings. throat has many—twenty or more—slits, edged with im perfect fringes (Fig. 255). Going up now the other way, in ganoids, such as th< garfish or bony pike (Lepidosteus) of our American fresl waters, and in the Polypterus of the Nile, we have ar opercle and gills like the teleosts, but gill breathing i: Fig. 253.—Petromyzon marius, showing the seven branchial openings. (After Cuvier.) supplemented by a little air breathing by means of aii taken into a vascular air bladder (Fig. 256). Finally, in the most reptilian of all fishes, such as th( protopterus of Africa, the lepidosiren of South America. 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 LeConte, Joseph, 1823-1901. New York, D. Appleton and Company
Size: 1952px × 1281px
Photo credit: © The Book Worm / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1900, booksubjectanatomycomparative
