TO 
THE COURT OF EXAMINERS 
OF 
THE SOCIETY OF APOTHECARIES, 
LONDON ; 
IN ACKNOWLEDGEMENT OF THE WELL-DIRECTED ZEAL 
WITH WHICH THEY HAVE USED THEIR POWER 
FOR THE ENCOURAGEMENT OF BOTANY IN THE 
MEDICAL PROFESSION, 
THIS WORK IS RESPECTFULLY DEDICATED BY 
THE AUTHOR. 
