94 
ON THE MAGNOLIA GRANDIFLORA. 
thus volatilized, and a transparent light-brown brittle resin 
remained, which was tasteless, inodorous, and readily in- 
flammable, burning with a smoky flame. This resin was 
heated to 400° Fahr., without the slightest evidence of 
melting. 
The brownish matter, before mentioned, was uncrystalliza- 
ble, resinous in its aspect, possessing the odor of the bark, 
and much of its bitterness and pungency. A portion of this 
when gradually subjected to heat, melted, and white vapors 
gradually passed from it, leaving a transparent brown, brittle 
resinous substance, which was tasteless and inodorous. 
To the liquor remaining after separating the putty-like 
substance, sufficient acetic acid was added to saturate the 
potassa, when a brown nocculent precipitate was thrown down. 
This was collected on a filter, washed and dried. It had a dark 
olive brown color, the consistence of wax, and .the peculiar 
odor of the bark. Although possessed of a slight taste, it had 
neither the peculiar bitterness nor pungency of the bark. It 
was inflammable, burning readily with much smoke and leav- 
ing a residue of charcoal. 
The liquid remaining after the separation of the last men- 
tioned product, was evaporated nearly to dryness. A red- 
dish-brown extract was thus obtained, which had no odor and 
little taste, except what was communicated by the acetate of 
potassa contained in it. 
A pound of the bruised bark was macerated in twice its 
weight of water for twenty-four hours, and subjected to dis- 
tillation, till two-thirds of the water had passed over. The 
product was opalescent with globules of oil floating on the 
surface. This was returned on another pound of the bark 
and again distilled. The product was more opalescent than 
before, and a larger portion of the oil was obtained. This 
was separated, and possesses the following properties : it is 
very sparingly soluble in water, but very soluble in ether, al- 
cohol, and oil of turpentine. Its alcoholic solution has a taste 
intolerably pungent, bitter aud nauseous ; a drop of it placed 
on paper and held over a lamp was rapidly volatilized leav- 
