I. General features of chemically identified neurons (F.E. Bloom). II. Catecholamines, serotonin, acetylcholine, and gamma-aminobutyric acid in the rat brain: biochemical studies (M.J. Brownstein and M. Palkovits). III. Dopamine-containing systems in the CNS (A. Bjorklund and O. Lindvall). IV. Noradrenaline-containing neuron systems (R.Y. Moore and J.P. Card). V. Central catecholamine neurons as revealed by immunohistochemistry with special reference to adrenaline neurons (T. Hokfelt, O. Johansson and M. Goldstein). VI. Distributional maps of tyrosine-hydroxlase-immunoreactive neurons in the rat brain (T. Hokfelt, R. Martensson, A. Bjorklund, S. Kleinau and M. Goldstein). VII. Low power photography in the fluorescence microscope using an automatic dark-field condenser-scanner (R. Martensson and A. Bjorklund). VIII. Immunocytochemical localization of aromatic-L-aminoacid decarboxylase (C.B. Jaeger, D.A. Ruggiero, V.R. Albert, T.H. Joh and D.J. Reis). IX. Comparative anatomy of central monoaminergic systems (A. Parent, D. Poitras and L. Dube). Subject index.