Descending mesencephalic tracts in cat, monkey and man; monakow's bundle; the dorsal longitudinal bundle; the ventral longitudinal bundle; the ponto-spinal tracts, lateral and ventral; the vestibulo-spinal tract; the central tegmental tract (centrale haubenbahn); descending fibres of the fillet. (The tracts from the nuclei fastigii to Deiter's nuclei; descending thalamo-spinal fibres; a tract from the inferior collicular region to the ventral column of the spinal cord.)