This 1910 volume by Frederick Keeble presents an account of the nature and behaviour of two types of marine worm.Plant-Animals by Frederick Keeble was first published in 1910 as part of the Cambridge Manuals of Science and Literature series. The volume presents an account of the nature and behaviour of Convoluta roscoffensis and Convoluta paradoxa, two types of marine worm.Plant-Animals by Frederick Keeble was first published in 1910 as part of the Cambridge Manuals of Science and Literature series. The volume presents an account of the nature and behaviour of Convoluta roscoffensis and Convoluta paradoxa, two types of marine worm.Originally published during the early part of the twentieth century, the Cambridge Manuals of Science and Literature were designed to provide concise introductions to a broad range of topics. They were written by experts for the general reader and combined a comprehensive approach to knowledge with an emphasis on accessibility. Plant-Animals by Frederick Keeble was first published in 1910. The volume presents an account of the nature and behaviour of Convoluta roscoffensis and Convoluta paradoxa, two types of marine worm.Preface; Part I. The Behaviour of Plant-Animals: 1. Introductory: the worms, Convoluta roscoffensis and Convoluta paradoxa: their habits and habitats; 2. The origin and significance of the habits of Convoluta roscoffensis and Convoluta paradoxa; Part II. The Nature of the Plant-Animals: 3. The green cells of Convoluta roscoffensis and the part they play in the economy of the plant-animal; 4. The origin and nature of the green cells of Convoluta roscoffensis; 5. The significance of the relation between coloured cell- and animal-constituents of the plant-animals; Bibliography; Index.