Outlines of comparative physiology touching the structure and development of the races of animals, living and extinct : for the use of schools and colleges . Fig. 255.—A, a Harderian gland of the Pelecanus onocrotalust \vii\\ theexcretory duct of the natural size injected with mercury. B, a portion ofthe same slightly magnified. Some vascular ramifications are still appa-rent between the lobules. STEUCTUBE OF GLANDS. 255 attached to the enlarged excretory duct, these, in their turn,having still smaller, rounded blind cells (fig. 255, B) sur-rounded by vascular net-works attached to them, an ar
Outlines of comparative physiology touching the structure and development of the races of animals, living and extinct : for the use of schools and colleges . Fig. 255.—A, a Harderian gland of the Pelecanus onocrotalust \vii\\ theexcretory duct of the natural size injected with mercury. B, a portion ofthe same slightly magnified. Some vascular ramifications are still appa-rent between the lobules. STEUCTUBE OF GLANDS. 255 attached to the enlarged excretory duct, these, in their turn,having still smaller, rounded blind cells (fig. 255, B) sur-rounded by vascular net-works attached to them, an arrange-ment by which the whole structure acquires a cauliflowerappearance. The Cowpers glands of the hedgehog, on theother hand (fig. 256, A), afford an example of that form inwhich the ramified excretory duct divides into elongated,pretty even, and slender cocca, which subdivide at their endsinto finger-shaped processes (fig. 256, B), partly straight,partly sinuous, which are then applied to one another in theform of flat lobules, these, in their turn, being connected bycellular tissue into larger lobes. [§ 421. In B man and thehigher verte-brata,
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Keywords: ., bookcentury1800, bookdecade1870, booksubjectzoology, bookyear1870
