CAMBRIDGE AGRICULTURAL MONOGRAPHS 



General Editors: T. B. Wood, M.A., and 

 E. J. Russell, D.Sc. 



Inorganic Plant Poisons and Stimulants. By Winifred 



E. Brenchley, D.Sc, F.L.S,, Fellow of University College, London. 

 With 19 illustrations. Royal 8vo, 5s net. 



Plants Poisonous to Live Stock. By Harold C. Long, 



B.Sc. (Edin.), of the Boatd of Agriculture and Fisheries. Royal 8vo. 

 6s net. 



CAMBRIDGE MANUALS 



General Editors : P. Giles, Litt.D., and 

 A. C. Seward, M.A., F.R.S. 



Royal i6mo. Cloth, is 3d net each. Leather, 2s 6d net each. 



30. The Natural History of Clay. By Alfred B. Searle. 



With 18 figures. 



32. Earthworms and their Allies. By Frank E. Bed 



DARD. With 13 figures. 



46. House-Flies and how they spread Disease. By 



C. G. Hewitt. With frontispiece and 19 figures. 



61. Bees and Wasps. By O. H. Latter. With 21 illus- 

 trations. 



72. The Fertility of the Soil. By E J. Russell. With 



9 illustrations. 



73. The Life-Story of Insects. By Prof. G. H. Carpenter. 



With 24 illustrations. 



Cambridge University Press 

 Fetter Lane, London: C. F. Clay, Manager 



The University of Chicago Press 



THE ORIGIN OF THE EARTH 



By 

 THOMAS CHROWDER CHAMBERLIN 



Head of the Department of Geology iu the University of Chicago 

 (Fourth volume in the University of Chicago Science Series) 



This book, by one of the leading geologists of the world, sets forth the disclosures 

 that led to the rejection, one after another, of the older views of the origin of our planet, 

 the futile attempts then made to emend these or to build others upon the same foundations, 

 the final rejection of all these, and the construction of a radically new view based on a 

 new dynamic foimdation. The later chapters of the book treat of the early stages of 

 the earth and of the way in which its leading processes took their start from their cos- 

 mogonic antecedents, these being held to be essential factors in the genesis of the planet. 

 The bcgmning of the inquiry is set forth in the Introduction; the euccessive chapters 



Testimony of Certain Vestiges of the Solar System ' , 

 Field" ; " Dynamic Encounter by Close Approach" ; " The Evolution of the Solar Nebula 

 into the Planetary System " ; "The Juvenile Shaping of the Earth " : "Inner Reorganiza- 

 tion of the Juvenile Earth"; "Higher Organization in the Great Contact Horizons." 

 ■ xii + 272 pages, 12mo, cloth ; 6* net 



The Cambridge University Press 



Agents for the British Empire 



London, Fetter Lane 



