(a) of this species, which it has been deemed on all hands 
to be; here we confess that we entertain some doubt of 
the specific identity of the two, and suspect that they 
may be truly distinct. At all events it is known by expe- 
riment that the root of œ does not contain any of the 
resin in which the active powers of the root of the true 
Jalap (8) reside; or at least that it contains it in so small 
a proportion, that it does not prevent its being used as an 
article of food. (See the last note in the Appendix to 
Volume IV of this Register.) 
In « the corolla is nearly white, and the leaves gene- 
rally lobed ; in £ the corolla is rose-coloured, and the leaves 
undivided. 
We have disposed the synonyms peculiar to each va- 
riety under their separate heads, so that « and 8 may be 
divided into species without confusion. 
It was introduced before 1733 by Dr. Houstoun; and 
lately by Mr. Lambert, who received the seed from Mexico. 
The drawing was taken last autumn from a plant which 
flowered in the stove at the Nursery of Messrs. Colvill, in 
the King's Road. 
We refer to volume 4. fol. 342. of this work for the 
description and further account of the species; as well as 
to the note at the end of the Appendix of the same volume. 
Old roots of the Carolinian and Georgian plant () have 
been known to weigh frum 40 to 50 pounds. The flesh is 
white and insipid. 
It is possible that « and 6 may be naturally of one 
species; and that a variation produced solely by the dif- 
ference of soil and cultivation in the different abodes 
of the two, may be the cause of the formation of the 
greater or less proportion of the resin essential to the me- 
dicinal effects of their roots. That change of climate and 
soil do vary the qualities of plants is known to every one. 
(x) will grow very well out of doors if planted in a warm 
border against a wall: (8) requires to be kept constantly 
in the stove. 
