CONTENTS. 



-»o*- 



LECTURES I. to VI. ON THE CLASSIFICATION OF ANIMALS 



LECTURE I. 



PAGE 



THE GREGARINIDA, RHIZOPODA, SfONGIDA, AND INFUSORIA .... 1 



LECTURE II. 



THE HYDROZOA, ACTINOZOA, POLYZOA, BRACHIOPODA, ASCIDIOIDA, 

 LAMELLIBRANCH1ATA, BRANCHIOGASTEROPODA, PULMOGASTERO 

 PODA, PTEROPODA, AND CEPHALOPODA 20 



LECTURE III. 



THE ECHINODERMATA, SCOLECIDA, ANNELIDA, CRUSTACEA, ARACH- 



NIDA, MYRIAPODA, AND INSECTA 42 



LECTURE IV. 



THE VERTEBRATA ; OR PISCES, AMPHIBIA, REPTILIA, AVES, AND MAM- 

 MALIA 58 



