. Electro-physiology . FIG. 264.—Portion of from electrical nerve-fibre of Mainptcrtints. (Fritsch.) understood from transverse sections, such as Fig. 264, after Fritsch, from the nerve-trunk. In the centre is the round section of the axis-cylinder, O'OOS mm. in diameter, surrounded with a medullated sheath from about 0'03 to 0'012 mm. in breadth. Externally to this there is first a broad zone of reticulated connective tissue, regarded by Fritsch as the analogue of the Henle-Schwaiin sheath (the " inner sheath " of Bilharz). This occupies ^ of the total diameter of the trunk, wh


. Electro-physiology . FIG. 264.—Portion of from electrical nerve-fibre of Mainptcrtints. (Fritsch.) understood from transverse sections, such as Fig. 264, after Fritsch, from the nerve-trunk. In the centre is the round section of the axis-cylinder, O'OOS mm. in diameter, surrounded with a medullated sheath from about 0'03 to 0'012 mm. in breadth. Externally to this there is first a broad zone of reticulated connective tissue, regarded by Fritsch as the analogue of the Henle-Schwaiin sheath (the " inner sheath " of Bilharz). This occupies ^ of the total diameter of the trunk, which is about 1/1 mm., and may, with the nerve-fibre, easily be shelled out from the next, concentric layers of connective tissue, which are richly vasculated. Seeing that at every division of a nerve-fibre the total cross-section of


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Keywords: ., bo, bookcentury1800, bookdecade1890, bookpublisherlondonmacmillan