BY THE SAME AUTHOR. 



I. 



Second Edition, revised and enlarged. 

 A MANUAL OF ZOOLOGY, 



FOR THE USE OF STUDENTS. 



WITH A GENERAL INTRODUCTION ON THE PRINCIPLES OF ZOOLOGY, 



AND GLOSSARY OF SCIENTIFIC TERMS. 

 Crown 8vo, pp. 673, with 243 Engravings on Wood, 125. 6d. 



II. 

 TEXT-BOOK OF ZOOLOGY, 



FOR THE USE OF SCHOOLS. 

 Crown 8vo, pp. 340, with 153 Engravings on Wood, 6s. 



in. 

 INTRODUCTORY TEXT-BOOK OF ZOOLOGY, 



FOR THE USE OF JUNIOR CLASSES. 

 With 127 Engravings, 35. 6d. 



IV. 



ESSAY ON THE GEOLOGY OF 



CUMBERLAND AND WESTMORELAND. 



Octavo, with Engravings, 35. 6d. 



v. 

 A MONOGRAPH OF THE BRITISH GRAPTOLITID/E. 



Octavo, with Engravings, 55. 



INTRODUCTION TO THE STUDY OF BIOLOGY. 

 Crown 8vo, with numerous Engravings, 55. 



VII. 



TEXT-BOOK OF GEOLOGY, 



FOR SCHOOLS AND COLLEGES. 

 Crown 8vo, with Illustrations. 



WILLIAM BLACKWOOD & SONS, EDINBURGH AND LONDON ; 

 and D. APPLETON & CO., NEW YORK. 



