Geological Survey. 36 
uouncing or modifying them, win farther res 
shewn them no longer tenable. s 
We havegreat sateen inthe general correctness of Mr. 
Eaton’s opinions, and statements of facts in this report, and 
they exhibit a view ceualia pleasing tothe geologist andto the 
political economist. The former will be gratified in con- 
templating the most important geological formations, pre- 
vailing with great uniformity through a vast extent of 
country ; and the latter will learn with satisfaction, that 
they embrace a multitude of useful things, such as slates, 
and limestones and marbles, of many varieties, sandstones 
and mill-stone grits, beds of Iron ore and of plaister of Pa- 
ris, rich deposites of sali, and strong presumptive evidences 
coal. The salt, the plaister, the hydraulic 
, and the iron ore of t this region, are deposites of ines- 
timable value. How happy was the discovery of hydraulic 
Jime in inexhaustible quantity, and of superior excellence, 
in the very places where it was wanted, for the massy 
sub-aqueons masonry of the locks, bridges, culverts, and 
aqueducts ; and who can estimate the importance, to fu- 
ture generations, of the salt and of the iron ore, which, 
with profuse bounty, are spread by the Creator over this 
favoured region. We lave been very strongly impressed 
with the unparalleled magnitude of the deposite of iron, 
which, according to Mr. ”Eaton’ s observations, extends, 
for more than two hundred and forty miles. e 
know not that the world affords a similar instance. 
r. Eaton’s book will form a very valuable guide to 
the geological traveller, through the region which it 
describes. Ever ery such traveller will keep it in his 
hand, and thus opportunities will constantly — sBord- 
ed, of examining the correctness of the a observ 
_ tions, of enlarging them in some instances, rd of pu iii 
ing them more in detail, and of correcting errors should 
any have been committed, for ina survey, $0 extensive 
and arduous, it would be surprising, should no errors be 
hereafter discovered ;—but Mr. Beton: by corre 
with great particularity, the places upon which his con 
clusions are founded, has put it in our power to review his 
bours at leisure. Additional contributions to science, 
_ agriculture, and the arts, may confidently be expected in 
- aregion, which i is already found to be rere in important 
eg Vill—No. rz) 46 
