This volume of Advances in Anatomy, Embryology and Cell Biology is based on material assembled by Dr. Jaap H.R. Schoen. Jaap Schoen published his results only partially himself (see Schoen s references in the preface of Usunoff et al. 1997). After his sudden death, due to a diving accident, Jan Voogd and Hans Feirabend of our Neuroregulation group encompassed his cerebellar results in the chapter on the cerebellum and precerebellar nuclei in Paxinos The Human Nervous System (Voogd et al. 1990), while Kamen Usunoff and myself grouped Schoen s trigeminal results and presented them together with...