THE 



INTELLECTUAL OBSERVEK 



REVIEW OF NATURAL HISTORY 



MICROSCOPIC RESEARCH 



AND 



EECEEATIYE SCIENCE 



YOLUIE XII. 



ILLUSTRATED WITH PLATES IN COLOURS AND TINTS, AND NUMEROUS 



ENGRAVINGS ON WOOD 



LOND ON 

 GEOOMBEIDGB AND SONS 



PATERNOSTER ROW. 



MDCCCLXVIII. 



A 



