. Journal of comparative neurology . 17, p. 102. PLATE 1 explanation of figure The drawings were made with the aid of a camera lucida from pyridine-silverpreparations of the spinal cord of the cat. 1 From the Seventh cervical segment. The substantia grisea presents a densemass of interlacing fibers. The nerve cells are indicated in solid black. Cappingthe posterior cornu is the lightly staining substantia gelatinosa. More dorsallyis seen the darkly staining tract of Lissauer, h. At n, is seen the obliquely cutmedullated fibers of the entering dorsal root in the fasciculus cuneatus. At c,is rep
. Journal of comparative neurology . 17, p. 102. PLATE 1 explanation of figure The drawings were made with the aid of a camera lucida from pyridine-silverpreparations of the spinal cord of the cat. 1 From the Seventh cervical segment. The substantia grisea presents a densemass of interlacing fibers. The nerve cells are indicated in solid black. Cappingthe posterior cornu is the lightly staining substantia gelatinosa. More dorsallyis seen the darkly staining tract of Lissauer, h. At n, is seen the obliquely cutmedullated fibers of the entering dorsal root in the fasciculus cuneatus. At c,is represented the dorsal spino-cerebellar tract, and at d, the pyramidal differentiation of the fiber columns of the cord shown in the drawing is due tothe varying proportion of non-medullated fibers which they contain. These aremost abundant in the tract of Lissauer. The pyramidal tract contains the nextgreatest number, and the dorsal spino-cerebellar tract the fewest. X 23. LISSAUERS TRACT IN THE CAT S. WALTER BANSON PLATE 1. THE JOURNAL OF COMPARATIVE NEUROLOGY, VOL. 23, NO. 4 276 S. WALTER RANSON PLATE 2 EXPLANATION OF FIGURES 2 From the seventh cervical segment. A narrow strip at right angles to theapex of the posterior cornu: a, fasciculus cuneatus; b, Lissauers tract; c, the dorsal spino-cerebellar tract. The medium sized and large lightly stained axons aremedullated, the fine darkly stained ones non-medullated. The latter are verynumerous and closely packed together in the tract of Lissauer. X 648. 3 Diagrammatic representation of the eighth thoracic segment, showing theshape and position of Lissauers tract. X 17. 4 Diagrammatic representation of the fifth lumbar segment, showing the shapeand position of Lissauers tract. X 17. 5 Diagrammatic representation of the first sacral segment, showing the shapeand position of Lissauers tract, n, Lissauers tract, 6 and c, connective tissuesepta dividing the entering root bundle into smaller fascicles. Bundles of non-medullat
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectmedicine, bookyear191
