St A COMPENDIUM OF 
GUMMI RESINA—GUM RESINS AND 
RESIN H—RESINS. 
Tue first are milky exudations of certain 
plants, which are really compounds of gum, re- 
sin and other produéts of vegetable origin, 
which exude from incisions made into the plant 
or tree, and are partially soluble in water form- 
ing emulsions. Alcohol and ether dissolve 
them almost entirely, whilst the Resins are solid, 
transparent (or nearly so) vegetable products, 
which are insolublein water, but soluble in oils, 
alcohol, and ether. 
Pinus Palustris, Pinus Australis. The 
long-leaved Pine, Yellow Pine, or Pitch Pine.— 
Natural order Conifere. Native of the south- 
ern parts of the United States, from Virginia 
to the Gulf of Mexico. This large tree, with 
its leaves arranged in threes with pinnatifid sti- 
pules, is the origin of the common turpentine 
of the stores (Terebinthina Communis), and _ 
known as gum turpentine. This substance ex- 
udes spontaneously, also by means of incisions 
into the tree. When found in commerce it is 
in large lumps or irregular masses, of a creamy 
