MOLLUSCOUS ANIMALS, 



INCLUDING 



SHELL FISH; 



CONTAINING AN 



EXPOSITION OF THEIR STRUCTURE, SYSTEMATICAL 



ARRANGEMENT, PHYSICAL DISTRIBUTION, 



AND DIETETICAL USES, 



WITH A REFERENCE TO THE EXTINCT RACES. 

 FORMING THE ARTICLE " MOLLUSCA" IN THE SEVENTH EDITION OF THE 



ENCYCLOPEDIA BRITANNICA. 



BY 



JOHN FLEMING, D.D. F.R.S.E. M.W.S. &c. 



PROFESSOR OF NATURAL PHILOSOPHY IN THE UNIVERSITY AND KING' 



COLLEGE, ABERDEEN, 



AUTHOR OF " THE PHILOSOPHY OF ZOOLOGY," " HISTORY 

 OF BRITISH ANIMALS," &c. 



EDINBURGH : 

 ADAM AND CHARLES BLACK, NORTH BRIDGE, 



BOOKSELLERS TO HER MAJESTY. 



MDCCCXXXVII. 



