Photoperiodism, melatonin and the pineal -- Contents -- Photoperiodism, melatonin and the pineal: it's only a question of time -- Mammalian pinealocytes: ultrastructural aspects and innerva- tion -- Discussion -- Circadian rhythms and photo- periodism -- Discussion -- Photoneural regulation of the mammalian pineal gland -- Discussion -- Melatonin and the brain in photoperiodic mammals -- Discussion -- Eyes-the second (and third) pineal glands? -- Discussion -- Photoperiodism in birds -- Discussion -- General discussion I Local and cellular actions of melatonin -- Retinal rhythms -- Light sensitivity and melatonin synthesis -- Photic influences on the developing mammal -- Discussion -- Generation of melatonin rhythms -- Discussion -- The role of rhythms in the response to melatonin -- Discussion -- Role of the pineal gland in the photoperiodic control of reproductive and non-reproductive functions in mink (Mustela vison) -- Discussion -- Melatonin administration: effects on rodent circadian rhythms -- Discussion -- The pineal and pubertal development -- Discussion -- Melatonin, light and chronobio- logical disorders -- Discussion -- Melatonin and affective disorders -- Discussion -- Some effects of melatonin and the control of its secretion in humans -- Discussion -- Melatonin and malig- nant disease -- Discussion -- General discussion II Melatonin assay technology -- How important is the duration of the melatonin signal? -- Index of contributors -- Subject index.