PREFACE. 
An endeavour has here been made to collect together into one 
Manual the information which has hitherto been only obtainable 
by reference to an immense number of Works and Journals, 
English and Foreign, in many cases inaccessible to readers in- 
terested in the subject. 
Information has also been obtained first-hand from some of the 
largest growers and manufacturers of Grasse, Nice, and localities 
in the Straits Settlements and West Indies. 
In dealing with such a multitude of subjects, concision and 
abruptness of style are unavoidable—otherwise the Work would 
be inordinately bulky and expensive; but copious references are 
given for the convenience of such readers who may desire to 
examine more fully into the botanical and chemical details of the 
matter abstracted. 
The physical and chemical properties of pure products are 
described in order to enable purchasers and consumers to detect 
adulterations, few substances being subjected to such extensive 
adulterations as drugs. 
Methods of extraction and abstracts of Patent Specifications are 
given for the benefit of those who may wish to learn the rudiments 
a2 
