32 
ON THE GALLS OF TEREBINTHUS AND PISTACIA. 
ART. XL— ON THE GALLS OF TEREBINTHUS AND 
PISTACIA. By M. Guibourt, Professeur de l'Ecole de Pharm- 
acie, Paris. 
In the circuit of the medical jury of the department of 
Eure, made by M. Ledanois in conjunction with MM. 
Richard and Gonillart, a pharmacien of Bourgtheroulde 
presented to the jury a substance, the nature and origin of 
which he was ignorant of, having found it in the stock of 
his predecessor. This substance, which was broken, had 
the appearance of a fragment of a dried pericarp. The 
color was reddish grey, it had no odor, but a very astrin- 
gent taste. M. Ledanois analysed it, and found its com- 
position to be as follows : — 
Gallic Acid - - - - 15 
Tannic Acid or Tannin - - 60 
Soft Resin or Turpentine - 4 
Caoutchouc - 1 
Inert residue - - - - 20 
100 
A portion of this substance having been sent me by M. 
Ledanois, I replied at first that it resembled the gall of the 
terebinth, mentioned by certain ancient authors, but having 
found in my own stock two other analogous galls, one of 
which coincides better with the gall of the terebinth, I think 
it right to recapitulate here the short descriptions which 
have been given of this substance, to describe the charac- 
ters of that which I possess, and to request those persons 
who may have a better opportunity of identifying its origin, 
to publish the information in a scientific journal. 
We find in the Observations of Lobel (page 53S, fig. 2,) 
in the History of Rare Plants, by Clusius (page 15,) and 
