Acknowledgements -- Foreword -- Metalogue: What is an Instinct? -- The Psychophysiological Study of Acoustic Communication in Animals -- Approaches to Studies of the Naturalistic Communicative Behavior in Nonhuman Primates -- Animal Communication in Man-Science: An Essay in Perspective -- Problems in the Systematization of Communicative Behavior -- The Concept of Language from the Point of View of Animal Communication -- The Classification of Acoustic Communicative Behavior among Teleost Fishes -- Time, Space, and Hierarchy in Zoosemiotics -- Semiotics and Ethology -- The Study of Animal Communication: An Overview -- Biographical Notes -- Index.