EDITOR'S NOTICE. 



A GLANCE at the Author's Preface will show that the present edition 

 has been remodelled to an extent which renders it almost a new work. 

 Dr. Carpenter's untiring industry has left little for the American editor 

 to add beyond an occasional illustration of the text, or notice of more 

 recent discoveries. Upwards of one hundred wood-engravings have 

 been introduced through the liberality of the publishers (the greater 

 number by the Author in his preparation of the sheets for this Ameri- 

 can edition), by which, it is hoped, its value is greatly enhanced. It 

 is confidently believed that the present will more than sustain the 

 enviable reputation already attained by former editions, of being one 

 of the fullest and most complete treatises on the subject in the English 

 language. + 



The additional matter is inclosed in brackets [ ]. 



291 SPRUCE STREET, Nov. 1852. 



