. Journal - American Medical Association. hat the axons hcli)ed (o fovm this network. Itecent investigationsdo not corroborate this view. The Golgi net is now believed byHeld himself to be glia. (After IT. Held, 1807). moreover, at the end of tliat year T suiniiiarized in aspecial vuhmie the facts and theories hearing on I lieneuron up lo the date of its publication. The iiungarum liistologist, S. Apathy,- by a dillicultmethod depending on llic use of a special variety of goldehlorid, succeeded in demonstrating in the ganglioncells of various invertebrates, especially the leech, re-markable ap
. Journal - American Medical Association. hat the axons hcli)ed (o fovm this network. Itecent investigationsdo not corroborate this view. The Golgi net is now believed byHeld himself to be glia. (After IT. Held, 1807). moreover, at the end of tliat year T suiniiiarized in aspecial vuhmie the facts and theories hearing on I lieneuron up lo the date of its publication. The iiungarum liistologist, S. Apathy,- by a dillicultmethod depending on llic use of a special variety of goldehlorid, succeeded in demonstrating in the ganglioncells of various invertebrates, especially the leech, re-markable appearances of fine lines, and, in places, ofnetworks formed by anastomosis of these lines with oneanother. This discovery of Apathy is an admirableadvance; it has since been manifoldly confirmed andwill always stand to his credit. Confronted by such aremarkable histologic picture as the fibrils presented, heimmediately began to speculate about them and ad-vanced the following hypotheses: (1) The neurofibrils in the nerve fibers and in the. Fig. 3.—Cell from the ventral horn of the lumbar cord of anadult rabbit, showing masses of neurosomes in the end-feet ter-minating on the dendrites and cell body. (After H. Held, 1897). nerve cells are the especial conducting element of thenervous system. (2) There are two kinds of cells in the nervous .sys-tem—nerve cells and ganglion cells; the functionof the former is to build neurofibrils which grow intoand through the latter, a single neurofibril passing con-tinuously through a series of ganglion cells. (3) In the so-called point substance of Leydig, ininvertebrates, neurofibrils leave the nerve fibers andnerve cells and give rise to free extracellular networksof neurofibrils (Fig. 1).
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Keywords: ., bookcentury1800, bookdecade188, booksubjectmedicine, bookyear1883
