Cambridge University Press 



Insect Pests and Fungus Diseases of Fruit and Hops. 



A Complete Manual for Growers. By P. J. Fryer, F.I.C, F.CS. 

 Crown 8vo. With 24 plates in natural colours and 305 original photo- 

 graphs and diagrams. 45 s net. 



The present volume represents a careful and painstaking attempt to produce as 

 complete a book of reference as possible, suited to the requirements of the fruit and 

 hop grower, and presented in such a form that the information, while given with 

 scientific precision, is also in a readily available form. 



"In modern commercial fruit culture results depend very largely on the grower's 

 ability to control the insect pests and fungous diseases which attack his trees. To 

 assist him in this work he has long needed a reliable handbook covering the whole 

 subject, enabling him to identify his enemies without loss of time, and indicating the 

 best and up-to-date methods of control. Such a book it has been the object of the 

 author of this volume to supply, and it may be said at once that he has succeeded 

 admirably. ... He has a particularly clear and orderly style of presenting his facts, 

 giving all (Tie information necessary to the practical man without forcing him to sift out 

 unessential details. . . . Altogether the book deserves to become the standard reference 

 work for growers." — The Gardeners' Chronicle 



Cattle and the Future of Beef- Production in 



England. By K. J. J. Mackenzie, M.A. With a Preface and 

 Chapter by F. H. A. Marshall, Sc.D. Demy 8vo. 7s 6d net. 



"One of the best treatises issued in recent years on the breeding and feeding of 

 cattle. ... Mr Mackenzie's main plea is for better bred, better handled, and more 

 economically finished animals. . . . The chapters on dual purpose cattle, pedigree 

 breeding, dairy shorthorns, and future possibilities are generally excellent. . . . 

 Dr Marshall's chapter on physiology contains a great deal of valuable matter in small 

 compass." — The Agricultural Correspondent of The Glasgow Herald 



Manuring for Higher Crop Production. By E. J. 



Russell, D.Sc, F.R.S., Director of the Rothamsted Experimental 

 Station. Second edition, revised and extended. With 1 7 illustrations. 

 Demy 8vo. 5s 6d net., 



" An authentic and lucid record of modern researches into soils and manuring, 

 with deductions and recommendations which the husbandman will find of great 

 assistance. . . . The war period has given us no more opportune or valuable book 

 for farmers." — The Times 



British Grasses and their Employment in Agriculture. 



By S. F, Armstrong, F.L.S. With 175 illustrations. Demy 8vo. 7s net. 



"The Agricultural student, for whom primarily the volume has been written, 

 will find in it a useful guide to his study of the grasses which form our meadows 

 and pastures, and valuable help in their practical employment and treatment." 



The Journal of Botany 



The Naturalisation of Animals and Plants in New 



Zealand. By the Hon. Geo. M. Thomson, M.L.C, F.N.Z.Inst. 

 Royal 8vo. 42s net. 



Typical Flies, a Photographic Atlas. By E. K. Pearce. First 

 Series. With 125 photographs. Royal Svo. los net. Second Series. 

 With 125 photographs. Royal Svo. 15s net. 



"The photographs are as good as any we have seen of this class of insect — a 

 peculiarly difficult class to represent pictorially in any natural manner. . . . There are 

 excellent short notes as to habitat, larval habits, and so on under the pictures. .. . We 

 hope this volume may stimulate a wider interest in this fascinating group." 



Nature on First Series 



Organic Evolution. Outstanding difficulties and possible explana- 

 tions. By Leonard Darwin, Hon. ScD. (Cantab.). Demy Svo. 4s net. 



Cambridge University Press 



London, Fetter Lane, E.G. 4 : C. F. Clay, Manager 



