2S EXAMINATION OF JALAP RESIN. 
alcohol. It has no odour, but a bitter taste ; heated on pla- 
tinum, it first melts, and then burns with a bright flame, 
diffusing the same odour as rhodeoretine. It melts at 221°. 
The analyses of the salts gave the following results : — 
Lead Salt. 
Carbon, 
36.95 
37.31 
42 
= 3185.87 
37.37 
Hydrogen, 
5.32 
5.40 
36 
449.3 
5.27 
Oxygen, 
25.29 
24.85 
21 
2100.0 
24.65 
Oxide of lead, 32.44 
J2.44 
2 
2789.0 
net f i 
32.71 
S524.17 
Barytes 
Salt. 
Carbon, 
51.11 
50.94 
84 
= 6371.7 
51.27 
Hydrogen, 
7.55 
7.54 
72 
898.6 
7.23 
Oxygen, 
33.71 
33.89 
42 
4200.0 
33.01 
Barytes, 
7.63 
7.63 
1 
956.9 
7.69 
12427.2 
Potash 
Salt. 
Carbon, 
53.49 
53.37 
126 
= 9557.6 
53.70 
Hydrogen, 
7.78 
7.66 
108 
1347.9 
7.57 
Oxygen, 
35.63 
35.60 
63 
6300.0 
35.42 
Potash, 
3.37 
3.37 
1 
589.9 
3.31 
17795.4 
Decomposition of Rhodeoretine by Acids. — A quantity 
of rhodeoretine was dissolved in absolute alcohol, and dry 
hydrochloric acid gas passed through the solution as long 
as any was absorbed. In this operation it became of a 
dark reddish-yellow color. The solution was corked and 
set aside for ten days, when it had become considerably 
darker and opake in mass. Mixed with water, a dark yel- 
low oily liquid separated, which had an agreeable smell 
and dissolved in aether. The entire liquid was mixed with 
water, and then shaken with asther, which took up the 
