WORKS BY THE SAME AUTACE 
i: 
A MANUAL OF 200 LOG 
FOR THE USE OF STUDENTS. 
WITH A GENERAL INTRODUCTION ON THE PRINCIPLES OF ZOOLOGY. 
Fourth Edition, revised and enlarged. Crown 8vo, pp. 732, 
with 300 Engravings on Wood, 12s.. 6d. 
Il. 
LEX T= BOOK, OF »ZOGLeUGy, 
FOR THE USE OF SCHOOLS. 
Second Edition, enlarged. Crown 8vo, with 188 Engravings, 6s. 
= ate 
INTRODUCTORY TEXT-BOOK OF ZOOLOGY, 
FOR THE USE OF FUNIOR CLASSES. 
With 127 Engravings. A New Edition, 3s. 
Iv. 
OUTLINES OF NATURAL HISTORY, 
FOR BEGINNERS. 
BEING DESCRIPTIONS OF A PROGRESSIVE SERIES OF ZOOLOGICAL TYPES. 
Fcap. 8vo, with Engravings, Is. 6d. 
V. 
A MANUAL OF PALAONTOLOGY, 
FOR THE USE OF STUDENTS. 
WITH A GENERAL INTRODUCTION ON THE PRINCIPLES OF 
PALEONTOLOGY. 
Crown 8vo, with upwards of 400 Engravings, I5s. 
vi. 
A MONOGRAPH OF .THE BRITISH GRAPTOLITIDA. 
Octavo, with Engravings, 5s. 
VII. 
INTRODUCTION TO THE STUDY OF BIOLOGe 
Crown 8vo, with numerous Engravings, 5s. 
WILLIAM BLACKWOOD & SONS, EDINBURGH AND LONDON. 
