230 
PHARMA CO ONOSY. 
plastic or partially dried exudation may be made into 
masses, as those of lactucarium and opium. These 
products may be grouped according to their origin as 
follows : 
1. Natural Exudations. 
( Acacia 
( Gummy exudations < 
Carbohydrates*^ ( Tragacantha 
(Saccharine exudation Manna 
' Balsam Styrax 
Balsamic resin Benzoin 
Oleo-resins 
{ 
Terebinthina 
Terebinthina canadensis 
Non-carbohydrates - 
( . - Asafetida 
1 . . Cambogia 
. . . Myrrha 
Scammonium 
( Guaiaci reidna 
Resins ■< Mastiche 
( Pix burgundica 
(" Elastica 
Milk juices •< Lactucarium 
( Opium 
Gum resins 
2. An Excrescence. 
The product of the puncture of an insect . . Gall a 
3. Artificial Products. 
Carbohydrates — Starch grains Amylum 
("Extract Catechu 
Non-carbohydrates *j C 
(inspissated juices < Aloe 
Kino 
Products of destructive distillation • . . Pix Liquida 
Residue from the distillation of turpentine Colophony 
For convenience in study, as well as identification, 
the drugs of this class may also be grouped as follows: 
I. Solid. 
1. In powder form. 
White, inodorous, nearly tasteless Amylum 
2. Not in powder. 
A. More or less spherical in form. 
a. In tears. 
Whitish or yellowish white, mucilaginous . Acacia 
Pale yellowish or greenish yellow, resinous, Mastiche 
b. Not in tears. 
Somewhat spherical Galla 
B. In cylindrical pieces. 
Grayish orange-brown Cambogia 
Blackish brown (see seeds) Guarana 
