454 NEW YORK STATE MUSEUM 
B2 Thick massive limestone fucoidal specially at 
the lower part. Fucoidal member of Calciferous. 
B? Just north of the Walker quarry in a small 
quarry at the head of a run south of an old lime- 
kiln, one foot of bluish drab, fine grained, compact 
limestone which weathers ash-gray. The outlines 
of several obscure fossils are visible on the upper 
surface of the layer, which rests on Calciferous 
sandrock. Birdseye. 
Bt Above no. 3 are about 5 feet of thin, blue- 
black, fine grained, irregular, lumpy layers weather- 
ing light ash-gray, and fossiliferous specially 
abounding in Columnaria alveolata 
Goldfuss. In eastern side of quarry the rock is 
in thicker layers, the lower containing Colum- 
niaTaa.’ cin the larger’ openme’ to*the yeast oie 
Columnaria bearing layers are capped by 
gray crystalline rock. Black river. 
B® In the Walker and Moore quarries the lowest 
rock exposed is dark bluish to grayish, crystalline, 
massive and weathers bluish gray. It is very fos- 
siliferous. Trenton. 
B® Thin, irregular, dark blue, fine grained lime- 
stone layers with much intercalated black shale. 
Highly fossiliferous. Trenton. 
B’ The nearest exposure of shales occurs about 
50 feet above no. 6 in an open ditch on the northern 
slope of the hill. The sandstones of the Hudson 
river stage are exposed at an altitude of approxi- 
mately 1200 feet A. T. The lower limit of the 
Hudson river at this point is probably nearly 1100 
feet A. T. From highest exposure of Trenton to 
probable base of Hudson river, 888 feet. Utica. 
The fauna of the Black river, no. 4, is as follows: 
1 Stromatocerium rugosum Hall 
2 Stictopora ramosa Hall 
3 Stictopora labyrinthica Hall? 
Monticulipora (Prasopora) lycoperdon Say 
$s 
135’ 183’ 
igen: Ba a ah 
6’== 190” 
3 == "EGS" 
iq’ 272" 
888’—=1 1007 
(r) 
(c) 
, . 
(c) 
