< 
Geology, Mineralogy, Scenery, &e. 201 
composed entirely of different substances. The rockis gran- 
ite; the pillars which support it are limestone.* The position 
also, is anatural one. ‘There is no mountain or other ele- 
vation near it from which the rock could have been thrown. 
The hill in which its pillars are fixed, is penetrated with 
limestone rocks, with here and there a specimen of granite 
intermingled ; so that their position has not been altered by 
any convulsion of nature. Here then, the Geologist finds 
a limestone of whose early foundation he can have no 
doubt. If granite be a primitive rock the strata on which it 
rests must at least be as early in the order of nature. From 
a specimen whose character is so indubitably fixed, we may 
proceed with safety not only to name, but to describe the 
species to which it belongs. Upon examination, the 
scription of the limestone in question will not be found ma- 
terially different from that which is laid down in books. 
color is white ; grain, large ; highly crystalline ; present-. 
ing a structure, very distinctly foliated—so much so that it 
can easily be chipped into little rhombs which are semi- 
translucent. There appear to be several ranges of it in 
this town—in most instances they take a course northeaster- 
ly and southwesterly, with very little if any inclination to 
the horizon—and they generally have the same external 
character. The country in which they lie is very obvious- 
ly a granite country, furnishing that rock in almost every va- 
ety. 
Arr. III, Sketches of a tour in the countres of New-Haven 
and Litchfield in Connecticut, with notices of the Geology, 
Mineralogy and Scenery, &¢. by the Eprror.—( From 
the papers of the American Geological Society.) 
Tue following observations arose out of a journey un- 
dertaken for other purposes and occupying only five days. 
_. The manner is more diffuse and popular than the sub- 
Ject might strictly demand, but this course was adopted 
with the hope of alluring some degree of attention to the 
* Specimens both of the Granite and the Limestone which have te 
mentioned have been forwarded for your ex: tion. Annexed you — 
its pillars as they are seen from the ro 
