ADVERTISEMENT. 



To this edition, the Author has added a chapter on Practical 

 Botany, or the Analysis of flowers, (page 297,) so that it is 

 now thought, no better work for the young Botanist, without a 

 teacher can be found. 



Hartford, Conn. May, 1854. 



Entered according to act of Congress, in the year 1854, by 



J. L. COM STOCK, 



in the Clerk's Office of the District Court of Connecticut. 



BIOLOGY LIBRARY 



STEREOTYPED BY 



RICHARD H. HOBBS, 



HARTFORD. 



