Bringier on the Region of the Mississippi, &. _ 45 
sas, told me it was very common on the Ohio, and all over 
Kentucky, but none could tell me the name. © 'The bark of 
the tree is rather whiter, and the leaves very. deep green, re- 
ie the live-oak and the pin-oak, as I have before re- 
narked. Some trees will yield from one hundred and fifty 
i two hundred pounds of caoutchouc. I have observed, 
that this wood, when dry, is very electric; like the. eaoute 
_oue if rubbed on a body which is. electric, particularly 
a-cold day, the body rubbed will adhere to the walls a quill 
dor example, will be attracted six inches from the wall, and 
stick fast to it, until all the fluid is dissipated. But the elee- 
tric excitement of this substance differs ftom the common; 
it has not Donan pra a which the idio-cleetric. bodies 
possess, erties to. the an- 
electric bodies. Thi elastic drawn several times on a 
quill, produces ies n : thes ‘im 
made ina cold wintér’s s day afford some amusement. iss 
SUPPLEMENT. 
~ Although this communication might be much beens ex- 
‘tended, I will close’ it wid a few o> shligered facts and mas 
tion 
| wet "prcepe abate qcare | ps ae 
PIE dic. Me car ervable, that ther > ere a 
s them = al and: I prevents ‘their oxida 
‘t It was afterwards | 
of the Literary and pha Aa 
