250 



THE ESSENTIALS OF HISTOLOGY. 



marked (5, 6), the neuroglia-layer having a very distinctly reticular 

 aspect, and being in part beset with small cells. All the rest of the 

 thickness of the grey matter appears mainly to contain long conical 

 cells (fig. 282, 5 ; fig. 283, 3, 4), the distal processes or apices of which 



** 



FIG. 283. SECTION ACROSS THE HIPPOCAMPUS MAJOR, DENTATE FISSURE, DENTATE 



FASCIA AND FIMBRTA. (Henle.) 



Gh, part of the gyrus hippocampi or uncinate convolution ; Fd, fascia dentata, or dentate 

 convolution ; between them is the dentate fissm-e ; Fi, fimbria, composed of longitudinal 

 fibres here cut across ; 1, 2, medullary centre of the hippocampal gyrus prolonged around 

 the hippocampus, //, as the so-called alveus, into the fimbria ; 3, layer of large pyramidal 

 cells ; 4, their processes (stratum radiatum) ; 5, reticular neuroglia (stratum laciniosum) ; 

 6, superficial medullary lamina, involuted around the dentate fissure ; * *, termination of 

 this lamina, the fibres here running longitudinally ; 7, superficial neuroglia of the fascia 

 dentata ; *, ring of small cells within this (stratum granulosum). 



are prolonged into fibres which lose themselves in the superficial layer 

 of neuroglia. The pyramidal cells rest upon the white centre, here 

 known as the alveus (1), which is the part of the hippocampus seen 



