E' THE SAME AUTHOR — continued. 



EXAMINATIONS IN NATURAL HISTORY, 



Being a Progressive Series of Questions adapted to the 



Author's Introductory and Advanced Text-Books 



AND the Student's Manual of Zoology. 



Crown 8vo, is. 



VI. 



INTRODUCTION TO THE STUDY OF BIOLOGY. 



Crown 8vo, with numerous Engravings 5s. 

 VII. 



A MANUAL OF PALAEONTOLOGY. 



For the Use of Students. 



With a General Introduction on the Principles of Pal/eontologv. 



Crown 8\o, with upwards of 400 Engravings. 153. 



' ' Tills book will be found to be one of the best of guides to the principles of Palceontology and 

 the study of organic remains." — Athciuvitm. 



THE ANCIENT LIFE-HISTORY OF THE EARTH. 



An Outline of the Principles and Leading Facts of Pal^ontological 

 Sci.ence. With a Glossary and Index 



Crown Svo, with 270 Engravings. los. 6d. 



" By a master in the science, who understands the significance of every phenomenon which he 

 records, and knows how to make it reveal its lessons. As regards the value of the work, there can 

 scarcely exist two opinions. As a text-book of the historical phase of Palceontology it will be indis- 

 pensable to students, whether specially pursuing Geology or Biology ; and without it no man who 

 aspires even to an outline knowledge of Natural Science can deem his library complete." — Quarterly 

 Jojirnal of Science. 



IX. 



MONOGRAPH OF THE BRITISH GRAPTOLITID^. 



Part I. — General Introduction. 

 With 74 Engravings, Svo, pp. 133. 5?. 



WILLIAM BLACKWOOD & SONS, Edinburgh and London. 



