Introduclorv 



SYNOPSIS. 



P:igc. 



5 



Cliaracter of work undertaken 5 



Method of reconstruction 6 



Description of Transitions from Cord to Medulla 9 



The anterior motor column 9 



Substantia grisea centralis and formatio reticularis 11 



The Individual Masses of Gray Matter If) 



Nucleus fasciculi gracilis I.5 



Nucleus fascicidi cuneati 18 



Relation of nuclei to floor of fourth \cntricle 21 



Nucleus nervi hypoglossi 24 



Nucleus ate cinereae 27 



Nucleus ambigiuis 31 



Nucleus nervi cochlea' 32 



Nucleus nervi vestibuli 33 



Nucleus nervi vestibuli mediulis 35 



Nucleus nervi vestibuli s])inalis 36 



Nucleus nervi vestibuli lateralis 37 



Nucleus nervi vestibuli superior 38 



Nucleus nervi abdueentis 40 



Nucleus nervi faciahs 41 



Nucleus nervi trigemini 42 



Nucleus intercalatus 46 



Nucleus tractus solitarii 48 



Nucleus of Roller 49 



Nucleus funiculi teretis 50 



Nucleus lateralis 51 



Nucleus incertus 52 



Nucleus olivaris inferior 53 



Number of cells in inferior olive 62 



Nucleus olivaris accessorius medialis 63 



Nucleus olivaris accessorius dorsalis 65 



The pontine complex 65 



Nuclei arciformcs 66 



Corjius ponto-bull>are 68 



Nuclei pontis 70 



Nucleus olivaris superior 74 



Acknowledgments 76 



Bibliography 76 



Explanation of plates 78 



