136 
other disorders in which use is made of the Polygata Senega, which 
is a plant seldom sold in Spain. 
To decide this well-founded conjecture, Physicians should 
make a diligent and attentive use and application of the bark, 
in order that medical experience and observation may prove it 
satisfactorily. 
If, as I hope, the bark of the Yallhoy spried in Europe 
with the same effects which it produces in Peru against dysen- 
tery, and if it likewise be found to possess the -properties attri- 
buted to the Polygala Senega, the catalogue of Materia Medica 
will be enriched by the addition of ‘this new and powerful re- 
nee 
With this view I submit to the Royal Medical Academy of 
Madrid the present Memoir, hoping that its learned members 
will, with their accustomed zeal, perfect and rectify a work so. 
important to the welfare of humanity, which was begun but not 
concluded with due critical oars, in Pere: and Sc an cannot 
accomplish satisfactorily myself. samen 
_Henceforward there is reason ta hope, that as ‘the adtiireBle 
yptic > of the Ratanhia,+ or Krameria triandra, sanctioned by 
Sisaveac, =7 
p- 177. tab. 70. tt is very probable that the Polygala Senega is a species of Monnina*, as 
oh, x suspect, various other species which botanists have classed and confounded among 
the Pol: i$, as will be stated in the sixth sane of eas ere Peotone: sstbesta when 
We treat of both genera in tha: by rE a ee = 
t Pesides the virtues of the extract of Renee ectoned’ in rie diereeation, whieh I Se 
lished on that specific, it has been latterly observed by some of the Facultys that it ineludes a cer~ 
tain tonic virtue which renders it still more estimable and worthy the attention of medical 
men. It has also been found that a cataplasm of Ratanhia operates powerfully on tu- 
* Bae Th 
re? Of this genus M. Bonpland has described sixteen species under the name of Hebiandra in Mug, Natur, 
Freunde Zu Berlin, 1803, which, with several new ones in the Lambertian Herbarium from Don Jose Pavon, 
May increase the number of species to twenty-four. A careful examination ,of the fructifieation of Poly- 
tag proves that it does not belong to ‘onninu, as conjectured by M. Ruiz. it, however, ought to 
form, per s, with some others, a genus distinct frot Polygala. There are in the Lambertian Herbarium 
from Pavon twenty-three species of this latter genus, aac? from ——. The geass ss is never 
met with in the colder or elevated regions.—Epir. 
