818 ; APPENDIX. 
> 
Balsamum Canadense. Pharm. Lond. & Edinb. 
THIS balsam is the resinous juice of the Pinus Balsamea, or 
Balm of Gilead Fir; a tree now well known in this country: which 
should have been figured with the other pines, but the drawing of 
it was at that time unfortunately mislaid. 
This balsam, which is transparent, of a iight amber colour, and 
tolerably firm consistence, 1s brought to this country from Canada; 
and hence receives the name of Canada balsam. It may be con- 
sidered as one of the purest of the turpentines; and on this 
account it has lately been received into the Materia Medica; and 
from being less offensive to the stomach, promises to supersede 
the balsam of Copaiva. 
Cassia lignea. (cortex, flores nondum explicate.) Pharm. Edinb. 
IN the Edinburgh Pharmacopeeia this is referred to the Laurus 
‘Cassia; but we have already stated the cassia to be only a variety 
of the Cinnamomum, and late observations tend to confirm this 
opinion. As a medicine it is certainly in every respect inferior 
to cinnamon. 
Colomba (radix) Pharm, Lond. & Edinb. 
Synonym. Calumba. Redi, Exp. circa varias res naturales, 1685. 
p. 142. Raijs de Mosambique of the Portuguese. 
‘WE have no botanical account of the vegetable which furnishes 
this root. It is brought from Colomba in Ceylon in knobs, or 
‘circular pieces, brown, and wrinkled on the outer surface, yellowish 
awithin, and consisting of cortical, woody, and medullary lamina. 
Hts smell is aromatic; its taste is pungent, and nauseously bitter. 
