WORKS BY THE SAME AUTHOR, 



I. 



A MANUAL OF ZOOLOGY, 



FOR THE USE OF STUDENTS. 



Witli a General Introduction on the Principles of Zoology. 



Fourth Edition, revised and enlarged. 



Crown 8vo, pp. 732, with 300 Engravings, 12s. 6d. 



II. 



TEXT-BOOK OF ZOOLOGY, 



FOE THE USE OF SCHOOLS. 



Second Edition. 



Crown 8vo, with numerous Engravings on Wood, 6s. 



III. 



INTEODUCTOEY TEXT-BOOK OF ZOOLOGY, 



FOR THE USE OF JUNIOR CLASSES. 



Second Edition, revised and enlarged. 

 Crown 8vo, pp. 234, with 156 Engravings, 3s. 



IV. 



A MANUAL OF PALZEONTOLOGY, 



FOR THE USE OP STUDENTS. 



With a General Introduction on the Principles of Palaeontology. 

 Crown 8vo, with upwards of 400 Engravings, 15s. 



V. 



EXAMINATIONS IN NATUEAL HISTOEY, 



Being a Progressive Series of Questions adajited to the 

 Author's Text-Books. 



Price Is. 



WILLIAM BLACKWOOD & SONS, Edinburgh and London. 



