CONTENTS 



I. THE MODERN STUDY OF ZOOLOGY. 



PAGE 



An address delivered at Owens College, introductory to 

 the Session 1879-80 I 



II. THE INFLUENCE OF ENVIRONMENT ON 

 THE STRUCTURE AND HABITS OF ANIMALS. 



A lecture delivered to the Owens College Debating Society, 

 January 1881 27 



III. EMBRYOLOGY AS AN AID TO ANATOMY. 



A lecture delivered to the Owens College Medical Students' 

 Debating Society, January 1881 41 



IV. THE THEORY OF CHANGE OF FUNCTION. 



A lecture delivered to the Owens College Biological Society, 

 1881 ....... . 53 



V. BUTTERFLIES. 

 A popular lecture (date unknown) . . . . -63 



VI. FRESH- WATER ANIMALS. 



An address delivered at the Manchester Athenaeum on the 

 occasion of the Annual Soiree of the Manchester Micro- 

 scopical Society, January 1887. Reprinted from the 

 Society's Transactions 78 



VII. INHERITANCE. 



The President's address delivered at the Manchester Micro- 

 scopical Society, 1888. Reprinted from the Society's 

 Transactions . 87 



