PREFACE 



HP* HE object of the present work is to give a 

 A succinct account of what is known concerning 

 the life of that branch of the animal kingdom to 

 which the Snail, the Oyster, and the Cuttlefish 

 belong— the Mollusca. 



Especial attention has, therefore, been given to their 

 history, relationships, and everyday life (ecology), 

 with only general notes on their anatomy, classifica- 

 tion and distribution, etc. 



The numerous illustrations it is hoped will prove 

 helpful to students. Many figures have been specially 

 drawn by Miss G. M. Woodward, but most of them 

 first appeared in the late Dr. S. P. Woodward's 

 " Manual of the Mollusca," the original drawings and 

 engravings for which are in the possession of the 

 writer. Cordial thanks are due to the Trustees of 

 the British Museum for their courteous permission 



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