386 J. D. Dana—Hudson River Age of the Taconic Schists. 
was jointed and obscure in its bedding; but since a limonite 
deposit (usually situated in these regions, between conformable 
strata of schist or quartzyte and limestone) adjoins it, and 
the proprietor, Mr. Wolcott, found this one resting on beds 
approaching the quartzyte in character, it is very probable that 
the stratum is conformable with the limestone, whose outcrops 
are not far distant, and that it is of the age of the Potsdam 
sandstone. The adjoining portion of the limestone may hence 
prove to be Calciferous or Chazy. Quartzyte rests on the 
Archean also at Poughquag, but in nearly horizontal beds 
(see this Journal, III, 111, 250, 1872) indicating a fault between 
it and the adjoining limestone. Mather mentions its occurrence 
also at Shenandoah. 
At Glenham near Fishkill, a flesh-red, coarse granite-like 
stratum (or “ bastard granite,” as it has been called) hes between 
the limestone and the slate, conformable to both; and it is evi- 
dently one of the stratified deposits, as is shown by its conform- 
able position, and its taking the color of the slate near the 
junction. The adjacent Archean Highlands were the source 
of the coarse granitic sand of which it was made. 
2, DepenpENT RELATIONS OF THE Two DutcuEss CouNTY LIME- 
STONE BELTS AND Two EasTERN BELTS IN CONNECTICUT. 
The preceding map also represents, from Percival, two east- 
ern belts of limestone in Connecticut, the Kent belt and_ the 
New Milford belt; and I may add that I have been over these 
regions pretty thoroughly, and can attest to Percival’s correct- 
ness. 
Viewing these belts and the three to the west Pm gee 
wi 
stone belts—the strike about N. 20° E. along the southern half 
and on the eastern side of the northern half, and with N, 50° 
. as the average near the Housatonic River, as if from a 
