. A treatise on nervous and mental diseases, for students and practitioners of medicine. Photograph of a section of the human median nerve, magnified 12 diameters. changes that occur in neuritis by making a section of the sciatic ofa frog, then excising pieces on different days after the original sec-tion, and observing the changes. Fig. Photograjih of a section of the same nerve, magnified diameters. Fig. 105 is a sketch of such changes that were found on thefourth day after such section of a frogs sciatic. It will be seenthat the axis-cylinder in some of these is entirely unaffect
. A treatise on nervous and mental diseases, for students and practitioners of medicine. Photograph of a section of the human median nerve, magnified 12 diameters. changes that occur in neuritis by making a section of the sciatic ofa frog, then excising pieces on different days after the original sec-tion, and observing the changes. Fig. Photograjih of a section of the same nerve, magnified diameters. Fig. 105 is a sketch of such changes that were found on thefourth day after such section of a frogs sciatic. It will be seenthat the axis-cylinder in some of these is entirely unaffected, andthat the medullary sheath alone shows alteration, the sheath ofSchwann in all being unaltered. The medullary sheath, as will beobserved, manifests a tendency to break up into various irregular DISEASES OF THE PEKIPHERAL NERVES. 177 forms. In Fig. 106, which represents at A the same sciatic nerve onthe eleventh day after section, these changes are seen to be much moremarked, whilst the axis-cylinder in all is more or less affected. Atlater periods, as shown at b, representing the fifteenth day, thesechanges in the axis-cylinder and the medullary sheath increasein intensity, whilst the connective-tissue sheath of Schwann becomessomewhat opaque, and its nuclei, which are ordinarily sparse andslightly stained, so that it requires ca
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Keywords: ., bo, bookcentury1800, bookdecade1890, bookidtreatiseonnervou00gray
