. The cyclopædia of anatomy and physiology. Anatomy; Physiology; Zoology. Tongue and Baleen-plates of the Piked Whale, Balcenoptera Boops.* The genio-glossi pass backwards and inwards from the anterior contour of the lower jaw. The tongue itself corresponds to the form of the space included by the rami of the lower jaw, and is consequently of great size in the Cachalots and Balaenidae, rising in the latter like an immense cushion (a, Jig. 259), into the space between the laminse of baleen (6), and affording a great quantity of the finest oil. In the figure it is represented in the Piked Whale,

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. The cyclopædia of anatomy and physiology. Anatomy; Physiology; Zoology. Tongue and Baleen-plates of the Piked Whale, Balcenoptera Boops.* The genio-glossi pass backwards and inwards from the anterior contour of the lower jaw. The tongue itself corresponds to the form of the space included by the rami of the lower jaw, and is consequently of great size in the Cachalots and Balaenidae, rising in the latter like an immense cushion (a, Jig. 259), into the space between the laminse of baleen (6), and affording a great quantity of the finest oil. In the figure it is represented in the Piked Whale,
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Image ID: PFN7CW
. The cyclopædia of anatomy and physiology. Anatomy; Physiology; Zoology. Tongue and Baleen-plates of the Piked Whale, Balcenoptera Boops.* The genio-glossi pass backwards and inwards from the anterior contour of the lower jaw. The tongue itself corresponds to the form of the space included by the rami of the lower jaw, and is consequently of great size in the Cachalots and Balaenidae, rising in the latter like an immense cushion (a, Jig. 259), into the space between the laminse of baleen (6), and affording a great quantity of the finest oil. In the figure it is represented in the Piked Whale, but probably preternaturally enlarged and raised by the extrication of gas caused by putrefaction. It is thick, and its free extremity is generally short, but this is less remarkable in the Phytophaga than in the Zoophaga. In the Dugong (jig. 260) the upper surface of the anterior part of the tongue («) is beset with cuticular spines, and on each side of its basis there is a remarkable horny retroverted pointed process (b, 6). Pig. 260.. Hyoid bones of the Piked Whale. transversely, and is slightly curved backwards and upwards; its middle portion supports an- teriorly two processes (b, b) resembling the base of the anterior cornua in the Ruminants ; besides these there are, in this genus, two rounded tubercles on the posterior margin op- posite these processes. The styloid bones (c, c) are cylindrical and slightly curved in two directions ; they are joined by cartilage on each side to the occipital protuberance which represents the mastoid process. The muscles which protrude and retract the tongue are extremely simplified in the Ce- taceans ; the retractors are represented by a single pair, analogous to the stylo-hyoidei, the fibres of which pass from the posterior margin of the stylo-hyal bones to the body of the hyoid. The stylo-glossi pass from the anterior and superior margin of the styloid process to their insertion. The hyoglossi arise from the middle of the convexity

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