ON STATICE CAROL INI AN A. 
115 
tion of a salt of iron being dropped upon this, struck a blue 
color. 
Experiment Eighth. — A portion of the root, which had 
been macerated for a long time in alcohol, was placed on a 
displacement filter, and a quantity of hot water passed through 
it. After this it was boiled in ether, and again placed on the 
filter, when on the addition of another quantity of ether, 
a light colored, oil3 r fluid was displaced, which left apparently 
a permanent greasy stain upon paper, had an unctious feel, 
and was readily inflammable. This, however, on evaporation, 
yielded a brown colored extract, which possessed the proper^ 
ties of a mixture of resin and caoutchouc, and must have been 
a solution of these substances in ether. 
Experiment Ninth, — A small quantity of the root was 
subjected to the action of boiling water in a displacement ap* 
paratus, and then alcohol passed through it ; after this it was 
treated with ether in the same filter, and the cold elherial 
tincture evaporated; this left a slight residuum of resinous 
matter, which being washed left a small portion of matter in^ 
soluble in alcohol, and having the peculiar characteristics of 
caoutchouc. This was soluble in oil of turpentine, and was 
exceedingly sticky to the touch. 
Experiment Tenth.— -The residue of experiment ninth,- 
was boiled in a small quantity of ether, and an additional 
quantity of the same product was obtained. 
Experiment Eleventh. — After treating a portion of the 
root with alcohol and water, it was subjected to the action of 
the oil of turpentine, on a displacement filter, when, by evapo- 
ration, the oil of turpentine was volatilized, and a thick, elastic, 
exceedingly sticky substance remained, possessing the pro- 
perties of caoutchouc. 
Experiment Twelfth. — -A lye was obtained by incinera- 
ting a portion of the root, and lixiviating the ashes with boiling 
water. This restored the color to reddened litmus, and turn- 
ed the yellow of turmeric to brown. It yielded a white pre"* 
cipitate with oxalate of ammonia, and also with nitrate of sil- 
ver and nitrate of baryta, but none with tincture of galls, ferro- 
VOL. VIII. — NO. II. 15 
