. Electro-physiology . FIG. 21.—a, Transverse section of Pectoralis major in Falcon ; 6, ib. Goose ; c, ib. Heu. (Knoll.) are still distinctions corresponding with dark and clear muscles, greater or less abundance of sarcoplasm. In Amphibia the clear fibres usually predominate ; the throat muscles of batracbians are, however, an exception. Knoll also found a considerable develop- ment of sarcoplasm in the jaw muscles of reptiles, and the limb muscles of Lacerta and Cistudo. In birds, on the other hand, the dark, plasmic fibres prevail, and constitute the pectoral muscles used in flight. In the


. Electro-physiology . FIG. 21.—a, Transverse section of Pectoralis major in Falcon ; 6, ib. Goose ; c, ib. Heu. (Knoll.) are still distinctions corresponding with dark and clear muscles, greater or less abundance of sarcoplasm. In Amphibia the clear fibres usually predominate ; the throat muscles of batracbians are, however, an exception. Knoll also found a considerable develop- ment of sarcoplasm in the jaw muscles of reptiles, and the limb muscles of Lacerta and Cistudo. In birds, on the other hand, the dark, plasmic fibres prevail, and constitute the pectoral muscles used in flight. In the hen the muscles of the breast and back consist, however, exclusively of light fibres, which are


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Keywords: ., bo, bookcentury1800, bookdecade1890, bookpublisherlondonmacmillan