190 Account of the Geology, Mineralogy, Scenery, &c. 
in a northwest direction for several miles, with ponds of 
magnitude and depth. A detached mountain range of con- 
siderable elevation is situated north of the Pracknes ridge ; 
it sweeps in a peoyieeeent course several miles, taking its 
rise and termination near the Highlands. Many of the 
summits are under csiissine and afford fine views of the 
immense secondary valley situated between - Highlands, 
the Hudson and the Pracknes ridge. Greenstone of a fine 
grain is the rock in place, in which I found aban and stil- 
bite imbedded. To the East of the Pracknes ridge is sit- 
uated another section of the extensive greenstone ranges 
called the Totoway mountain—this ridge rises near the 
Pracknes mountain six miles from Patterson, and connects 
itself with the Newark chain at the great falls ; it is in ma- 
ny places free from rocks, but on the East, precipices © of 
considerable extent and height with waving or denti iculated 
mural faces are sometimes observed, presenting columns ap- 
proaching to basaltic regularity, An insulated semicircu- 
lar wall of greenstone, with projecting columns occupies a 
summit of the Totoway ridge, bearing some resemblance 
toa castle or fort in ruins. Sandstone quarries are ob- 
— in several places at the base of the greenstone ridg- 
quarry situated three miles northwest of Patterson, 
sabes Pracknes mountain affords the best freestone of New- 
a Fine red and gray oe embracing some mi- 
alternates with eo dipping “under the 
oe with a western iaslnseeiha of about 12 degrees. 
s coal, inlayers of about two inches in thickness 
has eae Leosgasstly found at this and other parts of the. 
Pracknes ridge, in connection with sandstone and shale. This 
neighbourhood exhibits many indications that more valua- 
oe beds of this sscvcth cea exists below. Gneiss, granites 
prehnite, agate, Harve and a mineral asec to 
Gendbiption of cacholong. At the falls of the Passaic near 
Patterson, perpendicular mural precipices of grrensitiey 
with wide vertical fissures are observed, and am 
masses at the base... The lower strata mop a rock aoe 
much ra Ih. matter, es the place of 
