[ +34 I 
ferences mentioned by Mr. Ellis ; for it would not be 
difficult to produce inftances of hundreds of different- 
trees and ihrubs, whole lower and upper branches 
differ much more in the particulars mentioned by 
Mr. Ellis, than the figure and defeription given by 
ICoempfer do from the American Toxicodendron. 
I will only mention two of the moll obvious : the 
firft is the white poplar, whofe fhoots from the lower 
part of the item, and the fuckers from the root, are 
gamifhed with leaves very different in form and fize 
from thofe on the upper branches, and are covered 
on both Tides in the fpring with a woolly down. 
The next is the willow with fmooth leaves, which, if 
a ffandard, and the head lopped off, as is ufual, the 
young fhoots are gamifhed with leaves much broader, 
and of different forms from thofe on the older 
branches ; and thefe have frequently a hairy down 
on their under furface, which does not appear on 
thofe of the older. So that a perfon unacquainted 
with thefe differences in the fame tree would fuppofe 
they were different. And the American Toxicoden- 
dron has varied in thefe particulars much more, in 
different feafons, than what Mr. Ellis has mentioned. 
Mr. Ellis next fays, that the Toxicodendron men- 
tioned by Mr. Catefby, in his Natural Hiflory of Ca- 
rolina, is not the fame with that, which is now called 
by the gardeners poil'on-afh : but I am very pofitive 
of the contrary ; for mod of the plants in the nurfery- 
gardens about London were firft raifed from the 
feeds, which were lent by Mr. Catefby from Carolina ; 
part of which were fent to the late Dr. Sherard, as 
is mentioned by him in the Philofophical Trans- 
actions, N°, 367; and another part came to my 
hands. 
