CYT—CHI 127 
_— amie Jeff. Coll. No, 248—figure of the plant, 
0. 249, E 
Some native species of Cynanchum are, I think, medicinal. 
They would be good subjects for an inaugural dissertation. 
No. 216.—Cytisina. Cytisine. 
The proximate principle discoyered by MM. Cheyallier and 
Lassaigne, in the seeds of Cytisus Laburnum, on which 
the emetic and purgative property of those seeds depends. 
It is analogous to meta. 
The seeds yield—1, a greenish fatty matter, soluble in water 
and alcohol—2, a green colourmg matter—3, Cytisina— 
4, woody fibre—5, albumen—6, malic and phosphatic 
acids—7, malates of potass and lime. wed 
Quatitizs. Cytisina is incrystallizable, of a brownish-yellow 
colour, and ‘hitter nauseous taste; slightly deliquescent ; 
very soluble in water and diluted alcohol; insoluble in ether. 
The acetate of lead does not render its aqueous solution 
turbid ; the sub-acetate agit precipitates it. Infusion 
of galls occasions a yellowish-white, flocculent precipitate, 
and the alkalies communicate a greenish-yellow tint to it ; 
solution of gelatine does not precipitate it. In doses of 
1 grain, Cytisina operates as an emetic and cathartic—a 
stronger dose produces serious accidents, analogous some- 
what to those of Emeta. It has not been employed in 
medicine—is an excellent subject for an experimental in- 
augural dissertation. 
A bitter nauseous substance, resembling Cytisina, was disco- 
vered by the above-named chemists, in the flowers of 
_ arnica montana—to which principle that plant is supposed 
to owe its emetic powers. : 
No. 217.—CHIMAPHILA UMBELLATA. Pippsissewa, 
Winter green. . 
Cabinet specimen, Jeff. Coll. No. 250—figure of the plant, 
No. 251. 
No. 218.—CuImaPHILA MACULATA. Poison Pipp- 
sissewa, 
Cabinet a Jeff. Coll. No. 252—figure of the plant, 
No. 253. 
For detailed account of each, here noticed out of their lite- 
ral place, by omission, see W. P. C. Barton’s Veg. Mat. 
Med. U.S. Vol. Il. and Fl. N. Amer. Vol. I. 
