202 
GEOLOGY OF NORTH CAROLINA. 
long been known as lying quite across the bed of the stream, into Hali- 
fax, about two miles above the railroad crossing, on the farm of J. M. 
Mavo, the marl bed is at least 20 feet thick. The bones above referred to 
are embedded in it, at the bottom of the stream. Most of the skeleton 
has been carried off by curiosity hunters, and not more than 3 or 4 ver- 
tebrae are left. It belongs to the same genus as the Quanky specimen. 
The marl is of at least average quality. 
Blue Marls of Halifax and Edgecombe. 
49 
50 
51 
Silica, 
33.47 
42.75 
44.57 
Oxide of Iron and Alumina, 
4. IS 
5.64 
S.96 
Lime, 
12.99 
27 03 
19 27 
Magnesia, 
2.87 
0.32 
1.80 
Potash, 
0.48 
0.75 
1.00 
Soda 
. 0.21 
0.35 
Phosphoric Acid 
0.38 
0.29 
0.09 
Sulphuric Acid, 
0.61 
1.67 
0.33 
Carbonic Acid, . 
12.68 
20.40 
17.60 
Organic Matter and Water 
2.13 
1.15 
6.40 
Marl is found in abundance along the course of Quanky creek, and 
about Enfield. No. 49 is from the right bank of the creek above named, 
near the town of Halifax, on the farm of Maj. Fenner, who used it with 
advantage before the war. The bed lies deep, 25 to 40 feet below the 
surface, overlaid by gray and bluish stratified clays. At this point some 
very large bones were obtained, belonging to an unknown genus of 
whales, of which an entire upper and lower jaw and several large verte- 
brae are in the Museum. They are described by Prof. Cope in the Ap- 
pendix. This marl is found along the banks of the creek two miles higher 
up, where also cetacean vertebrae are common. 
No. 50 is Jfrom the border of Beach Swamp, 1 mile east of Enfield^ 
at W. E. Parker’s. The same marl is found at various points north and 
east of Enfield ; at Dr. Whitaker’s ; W. Burnet’s, 3 miles lower on the 
swamp ; and 4 miles southeast, at J. W. Whitaker’s, and at G. W. Phil- 
lips’. It is also found on Tar Biver about Rocky Mount. No. 51 repre- 
sents a bed lying half a mile below Battle’s Factory. It is also struck in 
dioMnsc wells in the neighborhood. Five miles lower, on the farm of Mr 
T. Battle, is a very sandy marl with few shells, cropping out in the river 
bank, which gave only 3.41 per cent, of carbonate of lime on analysis 
