CONTENTS. VOLUME I. 



BOOK V. 



(Second Branch of the Jlnimal Kingdom : Invertebrate Jinimals.) 



CONCHOLOGY; MOLLUSKS OR SOFT ANIMALS. 



LESSON I. 



General Considerations Mollusca in general Organization Nerv- 

 ous System General Form Skin Mantle Shell Formation of 

 Shell Digestive Apparatus Circulation of the Blood Respira- 

 tion Senses Eggs Classification Page 9 18 



LESSON IT. 



Class of Cephalopoda General Form Respiration Circulation- 

 Organs of Digestion Cephalic Cartilage Organs of Locomotion 

 Organs of the Senses Nervous System Habits Division into 

 two Families. 



Family of Cephalopoda Dibranchiata Octopus Vulgaris, or Poulpe 

 Argonaut Calmaries Cuttle-fishes. 



Family of Cephalopoda Tetrabranchiata Nautilus Ammonites 

 Belemnites Foraminifera P. 19 32 



LESSON III. 



Class of Gasteropoda General Conformation Classification. 



Order of Gasteropoda Pulmonea Organization Division into two 

 Families. 9 



Family of Terrestrial Pulmonea Limax Vaginulus Helix Buli- 

 mus Pupa Chondrus Clausilia Achatina. 



Family of Aquatic Pulmonea Onchidium Planorbis Limnoea 

 Physa Auricula. 



Order of Gasteropoda Pectinibranchiata Organization Classifica- 

 tion. 



Family of Trochoides Trochus Turbo Delphinula Turritella 

 Cyclostoma Valvata Paludina Littorina Monodon Phasia- 

 nella Ampullaria Janthina Nerita P. 33 51 



LESSON IV. 



Family of Buccinoides Buccinum Buccinum, properly so called 

 Harpa Purpura Cassis Cerithium Murex Strombus Vo- 

 luta Ovula Cypraea Conus. 



C * 



