yst Tobacco contains, albumen, mvallages gluten, 
extractive, a bitter principle, an essential oil, (already 
- noticed,) nitrate of potass, muriate of pstass, and a pecu- 
iar proximate principle, on which the properties of the 
plant are supposed chiefly to depend, viz. the subject of 
this number. Vauquelin considers nicotina, as apprvaching 
the volatile oils in its properties. It is volatile, poisonous, 
colourless, taste acrid, smell that of tobacco, sternutatory , 
soluble in alcohol and water, producing colourless solu- 
tions, from which-it is precipitated by infusion of galls. 
-. Has not been applied to medical purposes, though it 
might, if its dose and peculiar effects were ascertained, 
_ be found a-useful medicine. Is therefore a subject for an 
_ © experimental inaugural essay. Nicotina will certainly be 
te obtained from nicotiana rustica—(See W. P. C. Barton’s 
FIN. Am. Vol. 1. plate 25)—for Orfila has found that its 
extract acts like tobacco, but with less intensity. 
N 0 399.—Nux vomica. The vomic nut—the dead- 
ly poisonous fruit of Strychnos nux vomica, 
which see. ile este 
a aed 
eee TE 
0. - 
No, 400.—Orza Evropaa. The Olive tree. 
Orrrcinat. Olive oleum, of the Colleges—Olive-oil. 
Cabinet specimen, Jeff. Coll. figure of the tree, No. 479. 
A small tree, from 10 to.20 feet high, native of the South of 
Europe, and North of Africa, where it isnamed Zituna—it 
is cultivated in France, Spain, and Italy. 
2 - Qualities of the oil well known—it purges in dose of fZj. | 
No. 401.—Oxrea Distityata. L. & U.S. Olea 
Volatilia. E. Olea Essentialia, D. Distilled. 
Volatile or Essential oils. : 
