200 
Che leaves come out, the mis- 
take may be accounted for, but 
.not the disr sped for the idol. 
The A, glabra is a large tree, 
with black purple flowers and 
-a fruit as large as a cucumber; 
it growsinthe South and West 
from Ohio to Georgia. Fruit 
*very good and worthy cultiva- 
tion. 
While the A. tribola is only 
-a large shrub has green flowers 
and a fruit one fourth the size 
only of the last. It grows 
from Pennsylvania to Virginia, 
Bartram discovered in Geor- 
gia and Florida S other shrub- 
by sp* with small fruits. All 
these now belong to the Genus 
Asimina of Adanson 1763, 
which other botanists attempt- 
ed to change into Orchidocarpon 
and Porcclia , but Duval and 
Decandoie have restored the 
oldest good name of Adanson, 
derived from the native name 
in Louisiana of Asiminier. 
There are perhaps other sp. 
mi the West, I have seen one 
with rough seeds, but I am not 
prepared to distinguish it pro- 
perly. 1 refer our lazy botan- 
ists to Linneus and Catesby for 
the striking characters of A- 
glabru and triloba . Eaton has 
both, but he leaves A.glabra in- 
to the genus Annona , while I 
aver, having both before me in 
fruit, that it is a real Asimina , 
having the fruits transversal ly 
multilocular, seeds arilla e, 
and only one stigma to each 
fruit, which mostly abort ex- 
cept one in a flo wer, just as in 
tribola . 
149 . Ecpexis. 
JV* G. of Water Plants . 
A very singular water plant, 
one of the simplest in nature, 
is found in the river Schuylkill 
ancLeven in the hydrant water 
from it When allowed to stand 
a week in warm weather, a 
kind of diaphanous gelatinous 
film forms itself on the top of it, 
which gradually increases 
downwards and fills the vessel 
holding it, as if the whole wa- 
ter was congealing ; but when 
the water is all changed in this 
transparent jelly, it begins to 
dry up, and the whole by de- 
grees becomes a mere thin 
transparent membrane suspen- 
ded above. I have repeatedly 
noticed and watched this vege- 
table production, which must 
be produced by in visible germs 
in the water, and is very akin 
to Nostoc and other simple wai- 
ter Tremellas , I give it the 
name of Ecpeacis meaning con- 
gel ated film- 
Ecpexis, N. G. Rat Float- 
ing on water, solid, gelatinous, 
transparent, without any ap- 
pearance of organs. 
E. jhiviatilis Raf Amor- 
phous, flattened, smooth, un- 
co I o red . Fro m 2 to 10 i pc lies 
or more, unequally circular, 
but it is so hard to be seen out 
of vessels that I could not 
watch its form in the river. It 
appears to increase downwards 
by the successive formation of 
a simple cel lular jelly, C. 8. R. 
1 50 . Substitutes for Tobacco „ 
We have borrowed from the 
Indians the filthy and mmw 
