The ramparts at Marietta had a tree de
cayed in tho heart, but tho concentric out
er circles, which could be counted, wcro
462. The live oaks on tho low mounds
of Florida, w here one of the Algonquin
tribes, viz, the Shawnees, aver that they
once lived and had been preceded by a
people more advanced in arts, denote their
abandonment about 1145. But even these
data do not, probably, reach sufficiently
far to denote their truo period.
If wo hx upon the 12th century as tho
era of the fall of the Allcchan race, it is
not probable that wo shall over-estimate
tho event. They had probably reached
the Mississippi Valley a cenluiy or two
before, having felt, in their original posi
lion west and south of that stream, the
greal revolutionary movements which pre
ceded the overthrow of Toltcc and tho es
tablishmcnt of the Atzcc empire in Mex
ican America.
There are but two words left in our ge
ography, supposed to be of tho ancient
Alleghan language. 1 hese ore Allegha
ny ond Yioghiogany ; the latter being the
name of a stream which falls into tho Mo
nnngahchi on its right bank, about twenty
miles abovo Pittsburgh.
