Human anatomy, including structure and development and practical considerations . Longitudinal ground-section ofenamel, treated with acid, showingdisposition of ranges of ) in stripes of Schreger. Leftthird of figure shows alternate light(s) and dark {s) bands as seen by re-flected light. X 200. (Ebner.) absent. The interpretation of the stripes of Retzius is still a subject of dispute. Thebrown appearance of the stripes by transmitted iiijht only, by reflected li^dit appear-ing bluish white, disproves the assumption that they depend upon the presence ofpigment within the enam
Human anatomy, including structure and development and practical considerations . Longitudinal ground-section ofenamel, treated with acid, showingdisposition of ranges of ) in stripes of Schreger. Leftthird of figure shows alternate light(s) and dark {s) bands as seen by re-flected light. X 200. (Ebner.) absent. The interpretation of the stripes of Retzius is still a subject of dispute. Thebrown appearance of the stripes by transmitted iiijht only, by reflected li^dit appear-ing bluish white, disproves the assumption that they depend upon the presence ofpigment within the enamel. The widely accejjted view of Ebner, that the stripes aredue to air contained in the interfascicular clefts, hits been modified by \yalkh(jtt, who regards the markings as due to local diminution in thecalcihcati(3n of the enamel-prisms during certain periodsin the growth of the tissue when the central as well asthe cortical substance of a great number of columnsfails to take up sutificient lime salts. The enatnel-ciiticle, or membrane of Nasmyth,forms a continuous investmen
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Keywords: ., bookauthormc, bookcentury1900, bookdecade1910, booksubjectanatomy
