. Bulletin of the scientific laboratories of Denison University. 52 Bulletin of Laboratones of Denison University, [ exceedingly fine branchlets among which the arborizations of the root fibers end. From one or more of the terminal branches of this dendrite a very delicate neurite arises and goes by the shortest path directly into the layer of secondary tracts by which it leaves the vagal lobe to enter the longitudinal second- ary gustatory tracts of the oblongata, meanwhile taking up a. Fig. g. A chief secondary gustatory neurone from the vagal lobe of the carp—the neurone designated
. Bulletin of the scientific laboratories of Denison University. 52 Bulletin of Laboratones of Denison University, [ exceedingly fine branchlets among which the arborizations of the root fibers end. From one or more of the terminal branches of this dendrite a very delicate neurite arises and goes by the shortest path directly into the layer of secondary tracts by which it leaves the vagal lobe to enter the longitudinal second- ary gustatory tracts of the oblongata, meanwhile taking up a. Fig. g. A chief secondary gustatory neurone from the vagal lobe of the carp—the neurone designated a on Fig. 8. X 250. The black mass at the left of the neurone is precipitate deposited in the external limitating membrane of the vagal lobe. very delicate medullary sheath. In its passage through the layer of secondary tracts it sometimes gives collaterals into the motor layer of the vagal lobe (Fig. 10). Upon casual examination these chief neurones might sug- gest the appearance of neuroglia elements. The latter, how- ever, are of totally different form (Fig. 6) and there is no oppor- tunity for confusion. The gustatory neurones have exceedingly fine and densely branched dendrites, while the branches of the neuroglia are thicker and of the peculiar mossy or pulverulent appearance so characteristic of the supporting elements. The neuroglia, moreover, as a rule impregnates with a dark brown instead of black color. Besides the chief gustatory neurones just described, there are closely associated with them just internally the smaller gus- tatory neurones shown in Figs. 11 and 12. These have the same general form and arrangement, but are much simpler. The cell body is smaller and usually rounded and the dendrite less profusely branched. The slender neurite arises from the tip of the dendrite and enters the layer of secondary Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appeara
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