VOLUME IV., COMPLETING THE WORK. JUST PUBLISHED. 



THE CAMBRIDGE NATURAL HISTORY. 



EDITED BY S. F. HARMER, Sc.D, F.R.S., and 

 A. E. SHIPLEY, M.A., F.R.S. 



Fully Illustrated. In Ten Volumes. 8vo. Price 17s. net each. 



Vol. IV. CRUSTACEA S ARACHNIDS. 



CRUSTACEA. By Geoffeey Smith, M.A., and the late W. F. R. 

 Weldon, M.A. Trilobites. By Henry Woods, M.A. Introduction 

 to Arachnida and King-Crabs. By A. E. Shipley, M.A., F.R.S. 

 Eurypterida. By Henry Woods, M.A. Scorpions, Spiders, 

 Mites, Ticks, &c. By Cecil Warburton, M.A. Tardigrada 

 (Water-Bears). By A. E. Shipley, M.A., F.R.S. Pentastomida. 

 By A. E. Shipley, M.A., F.R.S. Pycnogonida. By D'Arcy 

 W. Thompson, C.B., M.A. 



PREVIOUSLY PUBLISHED. 



VOLUME I. 

 PROTOZOA. By Professor Marcus Har- 

 tog, M.A. (D.Sc. Lond.). PORIFERA 

 (SPONGES). By Igerna B. J. Sollas 

 (B.Sc. Lond.). CCELENTERATA AND 

 CTENOPHORA. By Professor S. X .J. 

 Hickson, M.A., F.R.S. ECHINODER- 

 MATA. By Professor E. W. MacBride, 

 M.A., F.R.S. 



VOLUME II.— WORMS, LEECHES, &c. 



By F. W. Gamble, M.Sc. ; Miss L. Shel- 

 don ; A. E. Shipley, M.A., F.R.S.; 

 Marcus Hartog, M.A. ; W. Blaxland 

 Benham, D.Sc. ; F. E. Beddard, M.A., 

 F.R.S. ; and S. F. Harder, Sc.D., F.R.S. 



VOLUME III.— SHELLS. 



By the Rev. A. H. Cooke; A. E. Shipley, 

 M.A., F.R.S. ; and F. R, C. Reed, M.A. 



VOL. V— INSECTS & CENTIPEDES. 



By Adam Sedgwick, M.A., F.R.S. ; F. G. 



Sinclair, M.A. ; and David Sharp, M.A., 

 F.R.S. 



VOLUME VI.— INSECTS. PART II. 



By David Sharp, M.A., F.R.S. 



VOLUME VII.— FISHES, &c. 

 By T. W. Bridge, Sc.D., F.R.S. ; G. A. 

 Boiilexger, F.R.S.; S. F. Harmer, 

 Sc.D., F.R.S. ; and W. A. Herdmax, 

 D.Sc, F.R.S. 



VOL. VIII.— AMPHIBIA & REPTILES. 



By Hans Gadow, M.A., F.R.S. 



VOLUME IX.— BIRDS. 

 By A. H. Evans, M.A. With numerous 

 Illustrations by G. E. Lodge. 



VOLUME X.— MAMMALIA. 



By Frank Evers Beddard, M.A., Oxon., 

 F.R.S., Vice-Secretary and Prosector of 

 the Zoological Society of London. 



KNOWLEDGE. — "If succeeding volumes are like this one, the Cambridge Natural 

 History will rank as one of the finest works on natural history ever published." 



SCIENCE GOSSIP. — "Every library, school, and college in the country should 

 possess this work, which is of the highest educational value." 



FIELD. — "The Cambridge Natural History series of volumes is one of very great 

 value to all students of biological science. The books are not intended for popular 

 reading, but for utilisation by those who are desirous of making themselves thoroughly 

 acciuainted with the branches of zoology of which they treat." 



sjXj; A Complete Prospectus, luith Specimen Pages, post free on application. 



MACMILLAN AND CO., Ltd., LONDON. 



