Neurosecretion in Invertebrates -- Current Problems in Invertebrate Neurosecretion -- Neue Mรถglichkeiten zur fluorescenzmikroskopischen Darstellung neurosekretorischer Zellen -- The Mechanism of Hormone Release from Neurosecretory Axon Endings in the Calliphora erythrocephala -- Investigations on Neurosecretion in the Central and Peripheral Nervous System of the Pulmonate Snail Lymnaea stagnalis (L.) -- Innervation of the Cephalopod Optic Gland -- Adrenergic Neurons -- Adrenergic Neurons (With Special Reference to Fluorescence Microscopical Studies in Mammals) -- Electron Microscopic Studies on Peripheral and Central Monoamine Neurons -- The Adrenergic Supply within the Avian Hypothalamus -- Adrenergic Neurons in the Lower Spinal Cord of the Pike (Esox lucius) and their Relation to the Neurosecretory System of the Neurophysis spinalis caudalis -- Biogenic Amines in the Tuber Cinereum of Xenopus laevis Tadpoles. Electron and Fluorescence Microscopical Observations -- The Effects of Antiandrogens on the Hypothalamus -- Ultrastructure of the Median Eminence of the Toad, Bufo bufo, Following Transections of the Hypothalamus at Different Levels -- Investigations on the Hypothalamus-Neurohypophysial Neurosecretory System of the Grass Frog (Rana pipiens) after Transection of the Proximal Neurohypophysis. III. Ultrastructure and Hormone Content of the Distal Stump -- Mechanisms of Release of Neurohypophyseal Materials -- Mechanism of Release of Neurohypophyseal Hormones -- Electrical Discharge Patterns in Hypothalamic Neurosecretory Neurones Associated with Hormone Release -- The Ultrastructure of Neurosecretory Fibre Terminals after Zinc-Iodine-Osmium Impregnation -- Electron Microscopic and Autoradiographic Study on the Neurosecretory System of Albino Rats with Special Consideration of the Pituicyte Problem -- The Origin of โ{128}{156}Synapticโ{128}{157} Vesicles in Neurosecretory Axons -- Hypothalamic Control of Anterior Pituitary -- Dopaminergic Pathways and Gonadotropin Releasing Factors -- Participation of Central Monoamine Neurons in the Regulation of Anterior Pituitary Function with Special Regard to the Neuro-Endocrine Role of Tubero-Infundibular Dopamine Neurons -- Brain Catecholamines and Growth Hormone Release -- Experimental Electron Microscopic Studies on the Neurovascular Link between the Hypothalamus and Anterior Pituitary -- Lichtmikroskopische Untersuchungen zur Frage eines morphologischen ร{132}quivalentes des Corticotropin-Releasing-Factors -- La localisation fine des terminaisons nerveuses fixant la noradrรฉnaline H3 dans les diffรฉrents lobes de lโ{128}{153}Adรฉnohypophyse de lโ{128}{153}Epinoche (Gasterosteus aculeatus L.) -- Recherches sur le rรดle des monoamines infundibulaires dans le contrรดle de la sรฉcrรฉtion gonadotrope chez le cobaye et la souris -- Zur Kontrolle der Gonadotropin-Sekretion bei Zonotrichia leucophrys gambelii -- Inhibitory Hypothalamic Control of Thyroid Gland Activity in the Goldfish, Carrassius auratus -- Weitere Befunde zur Struktur und Funktion des Zwischenhirn-Hypophysensystems der Vรถgel -- The Tubero-Infundibular Region of the Hypothalamus: A Focus of Testosterone Sensitivity in Male Tree Sparrows (Spizella arborea) -- Various Problems of Neurosecretion -- Distribution of Peptidergic Neurons in Mammalian Brain -- Qualitative and Quantitative Histochemistry of Mammalian Neurosecretory Centers -- Hypothalamic Neurosecretion in the Bat, Myotis myotis Borkhausen, during the Period of Hibernation and Activity -- Contribution ร  lโ{128}{153}รฉtude du systรจme hypothalamo-neurohypophysaire au cours de lโ{128}{153}hibernation -- Weitere Befunde zum enzymhistochemischen Verhalten von Infundibulum und Hypophysenhinterlappen der Ratte nach beidseitiger Adrenalektomie -- Elektronenmikroskopische Untersuchungen lichtmikroskopisch โ{128}{158}gomoripositiverโ{128}{156} Granula in Infundibulum und Hypophysenhinterlappen bilateral adrenalektomierter Ratten -- Structure and Function of the Liquor Contacting Neurosecretory System -- Zur Frage der ventriculรคren โ{128}{158}gomoripositivenโ{128}{156} Neurosekretion -- Function of Lysosomes in Neurosecretory Cells -- Morphological and Functional Relationships between the Hypothalamo-Neurohypophyseal System and Cerebrospinal Fluid -- Ultrastructure des granules neurosรฉcrรฉtoires du cobaye -- Concluding Remarks -- Participants of the Vth International Symposium on Neurosecretion