Part 1 Structure: structure and function in the parietal-pineal complex of the lizard, Koji Ohshima; comparative fine structural organization and histochemistry of the pineal organ, B. Vigh et al; pineal synaptic ribbons - new from the retina, L. Voillrath and I. Spiwoks-Becker; the structure of the pineal gland in domestic animals, V. Ramkrishna and Ashok Pawar; fish pineal - structure, function and regulation, B.B.P. Gupta and Y. Premabati. Part 2 Functions: melatonin - an ubiquitous and evolutionary hormone, Ario Conti et al; gastrointestinal melatonin - a Cinderella story of melatonin research, G.A. Bubenik; melatonin from the past into the future - our own experience, Andrzej Lewinski et al; rhythmic pineal melatonin production in birds, B. Mess and V. Csernus; melatonin in the anuran amphibian larva and its reciprocal interactions with the thyroid gland, M.L. Wright; the pineal gland and melatonin in domestic animals, N.H. Mohan; bimodal effects of melatonin on the inflammatory reaction in young chickens, K. Skwarlo-Sonta et al; pineal and glucoregulation in vertebrates with special emphasis on aves, A.V. Ramachandran; pineal and lateral eyes in photo-thermal induced gonadal response in Indian catfish, Bechan Lal et al; pineal gland and melatonin during gestation and foetal/neonatal development, C. Haldar and K.S. Bishnupuri; pineal in the regulation of avian reproduction, S.K. Maitra et al; re-entrainment of the mammalian circadian rhythm by melatonin, M. Singaravel et al; pineal regulated adrenal-gonadal function in birds, C.C. Sudhakumari and C. Haldar. Part 3 Molecular mechanisms: application of the chromatographic technique to the analysis of melatonin and its related indoleamines, T.Harumi and S.R. Pandi-Perumal; neuropeptidey, an important modulator of the noradrenergic input of the mammalian pineal gland, V. Simonneaux and C. Ribelayga; neurochemistry and biology of melatonin oxidation, R. Hardeland and B. Poeggeler; is NT the rate-limiting enzyme in melatonin synthesis?, Jimo Borjigin et al. Part 4 Clinical aspects: pinealities/uveitis - clinical and experimental perspectives, Carolyn M. Kalsow; melatonin - psychiatric perspectives, C. Pacchierotti et al; chronobiological, clinical and pharmacological aspects of melatonin in human circadian rhythm dysfunction, J.E. Nagtegaal et al; pharmacological effects of melatonin in ion-channels, G. Panyi et al; melatonin effects on cytoskeletal organization - implications for brain function and disease, G. Benitex-King et al; slow wave sleep distribution and REM sleep eye movement density in delayed sleep phase syndrome on and off melatonin treatment, L. Kayumov et al; apoptosis, cancer, immunity and melatonin, C. Haldar; dual role of melatonin in humans - a hormone and a chronobiotic drug, B. Claustrat et al.