28 The Migration of Birds. By T. A. Coward. 36 Spiders. By C. Warburton, M.A. 61 Bees and Wasps. By O. H. Latter, M.A. 46 House Flies. By C. G. Hewitt, D.Sc. 32 Earthworms and their Allies. By F. E. Beddard, F.R.S. 74 The Flea. By H. Russell. 64 The Wanderings of Animals. By H. F. Gadow, F.R.S. ANTHROPOLOGY 20 The Wanderings of Peoples. By Dr A. C. Haddon, F.R.S. 29 Prehistoric Man. By Dr W. L. H. Duckworth. GEOLOGY 35 Rocks and their Origins. By Prof. Grenville A. J. Cole. 44 The Work of Rain and Rivers. By T. G. Bonney, Sc.D. 7 The Natural History of Coal. By Dr E. A. Newell Arber. 30 The Natural History of Clay. By Alfred B. Searle. 34 The Origin of Earthquakes. By C. Davison, Sc.D., F.G.S. 62 Submerged Forests. By Clement Reid, F.R.S. 72 The Fertility of the Soil. By E. J. Russell, D.Sc. BOTANY 5 Plant-Animals: a Study in Symbiosis. By Prof. F. W. Keeble. 10 Plant-Life on Land. By Prof. F. O. Bower, Sc.D., F.R.S. 19 Links with the Past in the Plant-World. By Prof. A. C. Seward, F.R.S. PHYSICS 52 The Earth. By Prof. J. H. Poynting, F.R.S. 53 The Atmosphere. By A. J. Berry, M.A. 81 The Sun. By Prof. R. A. Sampson, D.Sc., F.R.S. 65 Beyond the Atom. By John Cox, M.A. 55 The Physical Basis of Music. By A. Wood, M.A. 71 Natural Sources of Energy. By Prof. A. H. Gibson, D.Sc. PSYCHOLOGY 14 An Introduction to Experimental Psychology. By Dr C. S. Myers. 45 The Psychology of Insanity. By Bernard Hart, M.D. 77 The Beautiful. By Vernon Lee. INDUSTRIAL AND MECHANICAL SCIENCE 31 The Modern Locomotive. By C. Edgar Allen, A.M.I.Mech.E. 56 The Modern Warship. By E. L. Attwood. 17 Aerial Locomotion. By E. H. Harper, M.A., and Allan E. Ferguson, B.Sc. 18 Electricity in Locomotion. By A. G. Whyte, B.Sc. 63 Wireless Telegraphy. By Prof. C. L. Fortescue, M.A. 58 The Story of a Loaf of Bread. By Prof. T. B. Wood, M.A. 47 Brewing. By A. Chaston Chapman, F.I.C. 82 Coal-Mining. By T. C. Cantrill. 83 Leather. By Prof. H. R. Procter. "A very valuable series of books which combine in a very happy way a popular presentation of scientific truth along with the accuracy of treatment which in such subjects is essential.... In their general appearance, and in the quality of their binding, print, and paper, these volumes are perhaps the most satisfactory of all those which offer to the inquiring layman the hardly earned products of technical and specialist research."--_Spectator_ "A complete set of these manuals is as essential to the equipment of a good school as is an encyclopaedia.... We can conceive no better series of handy books for ready reference than those represented by the Cambridge Manuals."--_School World_ Cambridge University Press C. F. Clay, Manager LONDON: Fetter Lane, E.C. EDINBURGH: 100 Princes Street