S. F. HARMER, Sc.D., F.R.S.
Fellow of King’s College, Cambridge; formerly Superintendent of the University Museum of Zoölogy; Keeper of the Department of Zoölogy in the British Museum (Natural History)

AND

A. E. SHIPLEY, M.A., Hon. Sc.D., Princeton, F.R.S.
Master and Fellow of Christ’s College, Cambridge; formerly Reader in Zoölogy in the University; Chairman of Council of Marine Biological Association

In Ten Volumes Fully Illustrated Medium 8vo Gilt Tops Each Volume, $4.75 net

CONTENTS

Vol.I.Protozoa, by M. Hartog; Porifera, by Igerna Sollas; Coelenterata and Ctenophora, by S. J. Hickson; Echinodermata, by E. W. MacBride.
Vol.II.Flatworms and Mesozoa, by F. W. Gamble; Nemertines, by L. Sheldon; Threadworms and Sagitta, by A. E. Shipley; Rotifers, by M. Hartog; Polychaet Worms, by W. B. Benham; Earthworms and Leeches, by F. E. Beddard; Gephyrea, etc., by A. E. Shipley; Polyzoa, by S. F. Harmer.
Vol.III.Molluscs, by H. A. Cooke; Recent Brachiopods, by A. E. Shipley; Fossil Brachiopods, by F. R. C. Reed.
Vol.IV.Spiders, Mites, Scorpions, etc., by C. Warburton; Trilobites, etc., by M. Laurie; Pycnogonids, by D’Arcy W. Thompson; Lingulatulidæ and Tardigrada, by A. E. Shipley; Crustacea, by Geoffrey Smith.
Vol.V.Peripatus, by A. Sedgwick; Myriopods, by F. G. Sinclair; Insects, Part I, by D. Sharp.
Vol.VI.Insects, Part II, by D. Sharp.
Vol.VII.Hemichordata, by S. F. Harmer; Ascidians and Amphioxus, by W. A. Herdman; Fishes (exclusive of systematic account of Teleostei), by T. W. Bridge; Fishes (systematic account of Peleostei), by G. A. Boulanger.
Vol.VIII.Amphibia and Reptiles, by Hans Gadow.
Vol.IX.Birds, by A. H. Evans.
Vol.X.Mammalia, by F. E. Beddard.

WHAT THE CRITICS SAY OF
THE
CAMBRIDGE NATURAL HISTORY

New York Evening Post.

Its editors may well be congratulated upon the completion of such an undertaking, whose vastness and difficulty can be adequately appreciated only by the skilled zoölogist. The student of biology who turns to this volume (Vol. iv) will not be disappointed in its value as a serviceable handbook. It is pleasant to observe how numerous, clear, and satisfactory are the drawings that illustrate the text.

American Journal of Science.