Cambridge University Press 

 A Dictionary of the Flowering Plants and Ferns 



By J. 0. WILLIS, Sc.D., P.E.S. Fourth edition, revised and rewritten. 

 Crown 8vo. 20s net. Cambridge Biological Series 



" This work made its first appearance in 1897 .... A third edition appeared in 1908 

 and was reprinted six years later : we now have it 'completely revised and as far as possible 

 brought up to date.' The most noteworthy feature of this new edition is the ' incorporation 

 of all the parts into one general dictionary and the omission of Part I of previous editions.' 

 The result is a volume which it would be impossible to commend too warmly .... It 

 should find a place in every botanical library, however small." — The Journal of Botany 



Botany 



A Text-book for Senior Students 



By D. THODAY, M.A. Second and enlarged edition. Large crown 8vo. 



With 230 text-figures. 7s 6d net 



" Tt is a pleasure to be able to recommend an introductory book on botany .... The 

 illustrations are excellent." — The Gardeners' Chronicle 



Fossil Plants 



A Text-book for Students of Botany and Geology 

 By A. C. SEWARD, F.R.S. Volume IV (Ginkgoales, Coniferales, Gnetales). 

 Demy 8vo. With 190 illustrations. 21s net. Cambridge Biological Series 



"This fourth volume successfully completes a monumental treatise for students of 

 botany and geology already highly valued for the thorough-going systematic treatment 

 with which it describes the fossil remains of plants of bygone ages .... It is one of the 

 most valuable and important descriptive text-books of palaeobotany yet given to the world." 



The Scotsman 



Palaeontology : Invertebrate 



By H. WOODS, F.R.S. Fifth edition. Crown 8vo. With 173 text-figures. 

 12s 6d net. Cambridge Biological Series 



The general plan of this work is to give, in each group of the Invertebrata, first, a short 

 account of its general zoological features with a more detailed description of the hard parts 

 of the animals ; secondly, its classification and the characters of the important genera, with 

 remarks on the affinities of some forms ; and, thirdly, a description of the present distribu- 

 tion, and the geological range. Some new figures have been added in this edition, and the 

 work has been revised throughout. 



Petrology for Students 



An Introduction to the Study of Rocks under the Microscope 



By ALFRED HARKER, LL.D, F.R.S., F.G.S. Fifth edition, revised. Crown 8vo. 



With 100 text-figures. 8s 6d net. Cambridge Geological Series 



This work, now offered in a further revised edition, has been written to serve as a guide 

 to the study of rocks in thin slices, and is, of course, assumed to be supplemented through- 

 out by demonstrations on actual specimens. The researches of British petrologists have now 

 made it possible to illustrate almost all the leading rock-types from our own country. A 

 number of new figures have been added for the present edition. 



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



