a 
PREFACE TO THE FIFTH EDITION. Vii 
him by a friend, the author confidently believes that it will, 
even better than the preceding editions, serve as a convenient, 
intelligible, and correct as well as comprehensive Manual for 
students ; and will also be very useful as a work of reference to 
those engaged in commercial pursuits, who, having constantly 
to make use of substances derived from the Vegetable Kingdom, 
require accurate and condensed information on the Properties 
and Uses of Plants. 
Lonpon : January, 1887. 
