CLASSIFICATION OF ORGANIC DRUGS. 19 



compoiind of so much that, like many another group of 

 sciences, it is a science for convenience' sake only.* 



CLASSIFICATION OF ORGANIC DRUGS. 



I. Animal Drugs. 



II. Vegetable Drugs without Organic Structure. 

 Sugars, gums, gimi resins, resins, oleoresins, balsams, 

 volatile oils, milky juices, extracts and enzymes. 



III. Vegetable Drugs with Organic Structure. 



(a) Starches, (b) Simple Powders, (c) Galls, (d) 

 Plant Organs or parts of Organs. Roots, Rhizomes, 

 Tubers, Bulbs, Corms,'Wood and Stems, Barks, Leaves, 

 Flowers and Floral Appendages, Fruits and Seeds. 



The above very brief classification is offered as the one 

 to be followed in the accompanying pages. 



In the discussion of plant organs, or parts of organs, 

 certain advantages might be derived from a study of the 

 simple organs first, such as seeds and fruits, taking up 

 later the organs with more complex anatomical structure, 

 yet custom has more or less stamped its approval upon 

 the reverse order of study, and it is here followed for 

 the sake of convenience. 



♦See Fluckiger, "Pharmakographia," for full discussion of the 

 history of drugs and their method of preparation. 



