Tri-State medical journal and practitioner . cell stands a wreath of extremely fine and tender hairs,continually shaken by a kind of lashing motion. Each , in rapidmotion, bends in a certain direction, assuming the shape of a hook, thenraises itself, again bends as before, and so on. When we look, or observethem by a high power of the microscope, at a large row of these olfactorycellules with their numberless little lashing hairs, we have in miniaturethe same aspect which a waving cornfield represents. The motion is sorapid that one at first perceives only a kind of glimmering along
Tri-State medical journal and practitioner . cell stands a wreath of extremely fine and tender hairs,continually shaken by a kind of lashing motion. Each , in rapidmotion, bends in a certain direction, assuming the shape of a hook, thenraises itself, again bends as before, and so on. When we look, or observethem by a high power of the microscope, at a large row of these olfactorycellules with their numberless little lashing hairs, we have in miniaturethe same aspect which a waving cornfield represents. The motion is sorapid that one at first perceives only a kind of glimmering along the edgeformed by the bases of the vesicles, and only when the movements underthe microscope gradually slacken, the single hairs become visible and rec-ognizable. It is on account of this phenomenon the said coating, consist-ing of vesicles (cellules), set with oscillating hairs, is called ciliatedepithelium. Physiology has yet no explanation for this wonderful phe-nomenon; we entirely ignore what force, inherent in the cellules, or work-. Fig. V. Diagram of the Connections of Cells and Fibers in the Olfactory Bulb. :. Olf. c, cells of the olfactory mucous membrane; Olf, deepest layer of the bulb, composed of the olfactorynerve fibers, which are prolonged from the olfactory cells; gl. olfactory glomeruli, containing arborisations ofthe olfactory nerve fibers and of the dendrons of the mitral cells; m. c, mitral cells, a; their axis-cylinder pro-cesses passing toward the nerve fiber layer; u, ir, of the bulb to become continuous with fibers of the olfac-tory tract: these axis-cylinder processes are seen to give off collaterals, some ot which pass again into the deeperlayers of the bulb; w, a nerve fiber from the olfactory tract ramifjing in the grey matter of the bulb. ing upon the hairs from without, causes the regular rhythmic oscillations ofthe latter; we only know that it is a force which is rapidly extinguishedon the expiration of the organism. It is true, the epithelium s
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Keywords: ., bookcentury1800, bookdecade1890, bookpublish, booksubjectmedicine