616 The American Naturalist. [July, 
small and perfect. The next three feet consisted of ampul- 
larie loosely thrown together, with a slight admixture of 
sand, Many of these shells were of extraordinary size, among 
Sherd, Orange Mound. (Actual size.) 
them being found specimens far surpassing all previous 
records known to science. At a depth of 1} ft. were clearly 
defined traces of a fire-place. Through the layer of ampul- 
E lariæ and in the succeeding stratum, con- 
sisting of one foot of brown sand, 
N 7) mingled with ampullariæ, unionidæ and 
~ paludinæ, pottery was abundant, thick 
and coarse in character, with a certain 
# percentage decorated with lines. 
©% In its method of manufacture, namely, 
' the admixture with the clay of vegetable 
fibre, which subsequent heat had des- 
troyed, leaving the material porous in 
character, it resembled the pottery of the 
3B shell ridges at Tick Island and of some 
P other deposits of the river, some sherds 
7? being so much as .7 inch in thickness. 
The patterns varied considerably as to 
the arrangement of lines, and in certain 
margin of the rim (Fig. 2). 
Fig. 
Orange Mound. (4 size) Some fragments with inverted rim were 
ones decorations appeared on the upper > 
