BY THE SAME AUTHOR — continued. 



EXAMINATIONS IN NATURAL HISTORY. 



Lkixg a Progressive Series of Questions adapted to the 



Author's Introductory and Advanced Text-Books 



AND THE Student's Manual oe Zoology. 



Crown Svo, is. 



VI. 



INTRODUCTION TO THE STUDY OF BIOLOGY. 



Crown Svo, ^vith numerous Engravings 5'' 

 VII. 



A MANUAL OF PAL>eONTOLOGY. 



For the Use of Students. 

 With a General Introduction on the Princirles of Pal.-eoxtologv. 



Crown S\o, with upwards of 400 Eiigra\-ings. 15s. 



" Tliis book will be found to be one of the best of guides to the principles of Palceontology and 

 the stud}' of organic remains." — Athcuutnn. 



VIII. 



THE ANCIENT LIFE-HISTORY OF THE EARTH. 



An Outlinp: of the Princitles and Leading Facts of Pal-IIontologicat. 

 Science. With a Glossary and Index 



Crown Svo, with 270 Engravings. lO:^. 6(1. 



" 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 Palaeontology 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."— (7 /^i^rAv/r 

 Journal of Sciaicc. 



IX. 



MONOGRAPH OF THE BRITISH GRAPTOLITID/E. 



Part I. — General Introduction, 

 With 7rj Engravings, Svo, pp. 133. 5s. 



WILLIA:\I BLACKWOOD & SONS, Edinburgh and London. 



