NEW JERSEY. 
241 
| A specimen of the Bossardville limestone (Cook's ribbon limestone) 
loin Richard Stoll's farm near Wallpack Center had the following 
imposition: 
Analysis of Bossardville limestone from near Wallpack ('enter. 
ica (Si0 2 ) 12. 80 
umina and iron oxide ( A1 2 3 and Fe 2 3 ) 2.10 
ne (CaO) 44. 85 
kgnesia ( MgO) 2. 18 
rbon dioxide (C0 2 ) 37. 68 
Outcrops of the Bossardville limestone are numerous from Flat- 
ookville to Peters Valley, along the eastern foot of the ridge. At 
e Nearpass quarry, near Tristates, it is exposed just above the base 
the section there shown, and has a thickness of 12 feet 4 inches. 
Specimens from other limestone formations exposed in Sandford 
jarpass's quarry, near Tristates, were analyzed by Cook, with the 
llowing results: 
Analyses of limestones from Nearpass quarry, near Tristates, N. J. 
ica (SiO,) 
imina (A1 2 3 ) 
ide of iron (Fe 2 3 ) 
ne (CaO) 
gnesia ( MgO ) 
rbon dioxide (C0 2 ) 
1 
2 
a 
8.50 
4.00 
22.80 
| 16.90 
1.10 
j 8.94 
I 2.57 
39.87 
52. 52 
20. 44 
1.42 
. 33 
12. 08 
33.31 
41.80 
31.06 
4.10 
| .90 
52.92 
41.58 
No. 1 is Cook's "firestone," a part of the Decker Ferry formation. 
). 2 is Cook's "old-quarry stone," the identification of which is 
newhat indefinite, but it is probably the top of the Rondout water- 
ae formation. No. 3, the so-called "pethstone," is No. 7 of the 
aterlime formation (p. 20, Annual Report for 1899). No. 4, the 
marry stone," is the Tentaculite limestone. Another specimen of 
Tentaculite limestone had 51.5 per cent of lime and 5.5 per cent of 
ica and quartz. 
The Nearpass quarry is not so far removed from the railroad at 
rt Jervis but that some of these beds may be profitably utilized, 
lalyses 2 and 4 above show that the "old-quarry stone" and the 
marry stone" are high-grade limestones. Analysis of the shaly 
rers in the quarry may show a rock with the right proportions of 
imina and silica. In Mr. Weller's paper, in the report for 1899, 
ne of the important exposures of these formations are noted. 
Bull. 243—05 16 
