XIV CONTENTS 



V 



PAGE 

 ON THE FORMATION OF COAL [1870] 137 



(A Lecture delivered at the Philosophical 

 Institute, Bradford.) 



VI 



ON THE BORDER TERRITORY BETWEEN THE ANIMAL AND 



THE VEGETABLE KINGDOMS [1876] 162 



(A Friday evening Lecture delivered at the 

 Royal Institution.) 



VII 



A LOBSTER ; OR, THE STUDY OF ZOOLOGY [1861] .... 196 



(A Lecture delivered at the South Kensington 

 Museum. ) 



VIII 



BIOGENESIS AND ABIOGENESIS [1870] 229 



(The Presidential Address to the Meeting of 

 the British Association for the Advance- 

 ment of Science at Liverpool. ) 



IX 



GEOLOGICAL CONTEMPORANEITY AND PERSISTENT TYPES 



OF LIFE [1862] 272 



(Address to the Geological Society on behalf 

 of the President by one of the Secretaries. ) 



