. A treatise on nervous and mental diseases, for students and practitioners of medicine. region in which the degeneration of theposterior columns (columns of Goll and Burdach) are gaps are seen in the cord, which, however, are entirely due tothe process of hardening. Fig. 135 is a drawing from the lower dorsal region of the samecord magnified 10 diameters, showing very clearly the degenerationof the posterior columns (columns of Goll and Burdach) quite up tothe inner side of the posterior cornua, and implicating a portion ofthe Spitzka-Lissauer columns. Fig. 136 is a drawing of
. A treatise on nervous and mental diseases, for students and practitioners of medicine. region in which the degeneration of theposterior columns (columns of Goll and Burdach) are gaps are seen in the cord, which, however, are entirely due tothe process of hardening. Fig. 135 is a drawing from the lower dorsal region of the samecord magnified 10 diameters, showing very clearly the degenerationof the posterior columns (columns of Goll and Burdach) quite up tothe inner side of the posterior cornua, and implicating a portion ofthe Spitzka-Lissauer columns. Fig. 136 is a drawing of a section of the same cord in the cervicalregion, magnified 10 diameters, showing the same implication of theposterior column, but not to the same extent, as a relatively less SPINAL CORD AND MEDULLA OBLONGATA. 251 affected mass is seen toward the posterior gray commissure and run-ning out like a broad wedge into the posterior columns. Fig. 137 is a drawing under a high power (360 diameters), showingthe loss of nerve fibres and a slight increase in the size of the vessels Fig. Drawing ot a section of a case of locomotor ataxia, showing degeneration of thecolumns of GoU and Burdach. Dorsal region. Magnified 10 diameters. and the increase of the connective tissue. This should be contrastedwith a similar drawing of the changes in myelitis upon page 200(Fig. Ill), and of the normal cord, Figs. 138 and 139. Fig. 136.
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