

ON GROWTH AND FORM 



By D'ARCY \V. THOMPSON, C.B., D.Litt., F.R'.S. 



Demy 8vo. pp. xvi + 794. With 408 illustrations. 21s net. 

 " Professor Thompson has written an interesting: and valuable book on a topic of 

 enduring interest. Why does the animal kingdom present to ns a picture of such 

 infinite variety, variety in size and shape, in external appearance, and in the minutest 

 details of internal anatomy ? And why. running- through the diversities, are there so 

 many resemblances? . . . The purpose of Professor Thompson's book is to explain 

 the 'must be ' of structure.' —Times 



THE 

 BIOLOGY OF DRAGONFLIES 



(ODONATA OR PARANEUROPTERA) 

 By R. J. TILLYARD, M.A., B.Sc, F.L.S., F.E.8. 



Demy 8vo. pp. xii + 398. With 4 plates and 188 text-figures. 15s net. 

 Cambridge Zoological Series. 

 " Never before has the group received such detailed and well-balanced treatment 

 as Mr Tillyard has given. . . . Students of the anatomy and development of insects 

 are much indebted to him for providing in this convenient form a trustworthy guide 

 to the external and internal structure of dragonflies at various stages of their life- 

 histories. —Nature 



FOSSIL PLANTS 



A Text-Book for Students of Botany and Geology 

 By A. C. SEWARD, M.A., F.R.S. 



Vol. I, with frontispiece and 111 illustrations, 10s net. 



Vol. II, with frontispiece and 205 illustrations, 15s net. 



Vol. III. with frontispiece and 253 illustrations, 18s net. 



Vol, IV in the press. 



Cambridge Biological Series, 



Volume I includes a short historical sketch of Paleobotany, chapters on the 



relation of Paleobotany to Botany and Geology, geological history, the preservation 



of plants as fossils, &c. The systematic part deals with the Thallophyta, Bryophyta, 



Equisetales and the Sphenophyllales : a general account of recent plants is included 



in each group. Volume II deals with Sphenophyllales (concluded), Psilotales, Lyco- 



podiales, Filicales, and Pteridospermese. Volume III deals with Pteridospermeaj, 



Cycadofilices, Cordaitales. Cycadophyta. 



ALG/E 



By G. s. WEST, M.A., D.Sc, A.R.C.S., F.L.S. 



Vol. I, Myxopbycea?. PeridinieaB, Bacillarieas, Chlorophycete, together with a 



brief summary of the Occurrence and Distribution of Freshwater Algaj. 



Large royal 8vo. pp. x+476. With 271 illustrations. 25s net. 



Cambridge Botanical Handbooks. 



" Until the appearance of the present work the difficult group of the Algse has 



lacked an effective English exposition bringing the subject into line with the great 



developments that have taken place during recent years • • • The numerous and clear 



illustrations and the copious bibliography do much to enhance the value of the work. 



Altogether the author has succeeded in filling a gap that has been widening rapidly 



for years past, and students and others will welcome the correlation of the great 



stores of scattered work on the subject that have accumulated.'' —Country Life 



Prospectuses of any of the above books will be sent on reqt* 



cambrtDge Omfaerrft? pxm 



FETTER LANE, LONDON, EC. 1 : C. F. CLAY. MANAGER 



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