INSTITUTE OF SCIENCE, PHILADELPHIA. 205 



The first locality of importance is at Mr. Wm. Nixon's (called Harper's 

 Landing by Tuomey), about fifteen miles from Conway by the river, and half 

 that distance in a direct line. Here the following section was taken : 



Soil and ferruginous sand, about 20 feet. 



Shell marl (the lower 4 feet much decomposed), 11 feet. 



Blue (Cretaceous) marl without fossils, 8 feet. 



Three miles above this is Nixonville, or Grahamville, near which is 

 Tilly's Lake, a tributary of the Waccamaw. Near the mouth are some very 

 important outcrops, giving the following section : 



Soil and ferruginous sand, about 20 feet. 



Shell marl (Pliocene), 9 to 10 feet. 



Blue (Cretaceous) marl with Exogyra costata, 2j4 feet. 



Exogyra occurred in the Pliocene marl to the height of a foot above the 

 level of the blue marl, being, of course, adventitious. 



At Bear Bluff, about six miles above the lake, is an outcrop of decom- 

 posed shell marl about six feet thick, but affording little in the way of fossils 



The next place of importance is Todd's Ferry, which is probably the 

 locality cited by Tuomey under the name of Royal Ferry. It is about twelve 

 miles from Conway by land, but nearly three times as far by the tortuous 

 course of the river. Here were found : 



Soil, 4 to 6 feet. 



Shell marl, lower half much decomposed, 8 feet. 



Sand with Pecten eboreus and Ostrea meridionals, 3 feet. 



The Cretaceous was not visible here. Two miles above is Red Bluff, 

 where the marl is so indurated as to afford few specimens, but they were 

 identical with those previously found. The following section was made : 



Soil and ferruginous sand, about 10 feet. 



Indurated shell marl, 5 feet. 



The lower decomposed marl appears to be identical with the upper part 

 of the bed, for at Tilly's Lake, where they were best preserved, the same 

 species were found in both parts of the bed. 



After completing his collections on the Waccamaw, Mr. Johnson pro- 

 ceeded to the estuary of the Neuse River, in North Carolina. At Mr. Malli- 

 son's place, thirteen miles below New Berne, N. C, the following section was 

 obtained, the strata dipping slightly seaward: 



Soil and ferruginous sand, 10 feet. 



Ferruginous sandy clay, 10 to 12 feet. 



Bluish clay with fossils (Pliocene), 5 to 6 feet. 



At the mouth of Slocum's Creek, fifteen miles below New Berne, the 

 formation was similar, except that the more arenaceous character of the shell- 

 bed better facilitated collecting. Here the section was: 



Soil and ferruginous sand, 10 feet. 



Ferruginous sandy clay, 10 feet. 



Blue sandy clay and yellow sand with shells, 4 to 5 feet. 



