. The Carolina medical journal [serial]. Fig. from Oppenheims recentwork. I. ;3eases of the Nervous System, page 03. The nerve cell, or neuron, as it iscalled, is the nerve unit of the wholenervous system, and when carefullyanalyzed, seems to be a veritable liv-ing animal, since it appropriates foodfrom the circulation, generates en-ergy of various kinds, stores up re-serve force, etc. By means of Nissls method ofstaining the protoplasm of the neu-ron is seen to be arranged in definitegroups or rows of granules. Thesegranules stain readily, hence arecalled chromatophilous or Niss
. The Carolina medical journal [serial]. Fig. from Oppenheims recentwork. I. ;3eases of the Nervous System, page 03. The nerve cell, or neuron, as it iscalled, is the nerve unit of the wholenervous system, and when carefullyanalyzed, seems to be a veritable liv-ing animal, since it appropriates foodfrom the circulation, generates en-ergy of various kinds, stores up re-serve force, etc. By means of Nissls method ofstaining the protoplasm of the neu-ron is seen to be arranged in definitegroups or rows of granules. Thesegranules stain readily, hence arecalled chromatophilous or Fig. II. Fig. III. The chromophilic bodies may beseen in Figure II., after states that these chromophlicbodies consist of highly complex andelaborated substances transformedby the cell from the food substancescarried thither by the circulation andare supposed to be the food matterfor the cells. From this stored-up food the cellsgenerate nervous energy or vitalforce. In other words, the chromo-])hilic bodies are the storage batteriesof the nerve cells. When they areexhausted the cells can no longer per-f(jrm their function until a fresh sup-ply of pabulum is taken from theblood. Thus it is seen in examiningthe cells of the lower animals imme-diately after great fatigue that thechromophilic bodies are lessened innumber and size, and the cell itself 1. Oppenheim, loc. cit. 2. Quarterly Jourml of IneV)riety, October,II, 1900, page 431- ORIGINAL COMMUNICATIONS. is smaller and irregular in outline. By means of Xissls method ofstaining, we arc enabled to study thediseases of
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