JRevieio of Recent Geological Literature. 51 
works of the mound Imilders sometimes associated witli tlie flood- 
plain, but tlie association was more ancient than the proximity of 
the village was to the water which formerly covered the plain. 
Formerly the waters flowed peacefully at the foot of the terrace 
on which the ^'illages were built and the covered waAs ran eagerly 
to meet them. Between these covered ways we imagine the peo- 
ple to have frequently passed, all of the time relying on the earth- 
wall to protect them from ever}" lurking foe. We imagine also 
that the canoe navigators frequenth' landed on the grades or in- 
clines and drew up their canoes, quite secure in their feeling that 
the friendh' stream would not make an onslaught and cany them 
away. But by and by, for some reason, this very water which 
was so full and strong began its uncertain, unstable course. It re- 
tired from the foot of the terrace, it shrunk away from the vil- 
lages, it began to flow in the narrow channel, but it was constanth- 
rising and overflowing its old flood-plain, and then the havoc be- 
gan. The river not onh" deserted the villages but it turned 
against them and began to even undermine the defenses, and the 
walls were soon opened and wide gaps appeared in the enclosures. 
The villagers, however, had gone befoi-e this occurred, for there 
seems to have been no repairing of the breaches and the water was 
allowed to do as it would. 
In two remarkable cases it so happened, however, that after 
the villages on the teiTaces were deserted, and after the flood-plain 
was suflflciently dr}- for a later tribe to build its earth-work or its 
rotunda, then the earth-work appeared which Dr. Thomas calls 
the Cherokee monument. This is our argument; the village 
of the sun-worshipper on the terrace, and the rotunda or tomb or 
whatever it is on the fliood-plain, were not reall}- the work of the 
same people, but that the havoc of the flood against the terrace 
and the drainage of the same plain all took place since the " lost 
race " made its appearance and took its departure. 
EEYIEW OF PvECE:s^T GEOLOGICAL 
LITERATURE. 
Chemical and Qeological Essays. By Thomas Sterrv Huxt. Third 
edition, with a new preface, pp. XLVI and 489, 8vo, 1891. Scientitic 
Publishing Co., New York. The chaptert of this book are as follows: 
