



PROCEEDINGS OF SCIENTIFIC SOCIETIES. 559 
The largest of these mounds are peculiar in their character, differing 
from any shell-mounds yet described. They are not kjekkenmeddings, i. e., 
simple accumulations of kitchen refuse, of shells rejected after the con- 
sumption of the soft parts, but seem to have been built for a purpose; 
Shells being used as the most convenient materials at hand. They have 
even been increased in size, and raised in height from time to time, as evi- 
denced by the occurrence at different levels of dark colored strata of true 
such materials, and are always four or five times as thick as the dirt bed. 
The shells, too, are not such as indicated merely the rejectmenta of abo- 
riginal feasts, being of all sizes from that of Littorina to that of Busycon, 
and often showing evidence of having been dead w laced in the 
ound; some, indeed, showing remains of barnacles attached to their 
inner surfaces. Dr. S. believed these mounds — so hem at least — 
to have been built as places of refuge during the great inunda- Fig. 84. 
tions of the sea to which the coast region of TM Florida, for 
thiles inland, is even now subject in violent sto The addi- 
tions to the mound made by the people who peine upon them 
may have been ittis by the occurrence of an inundation of 
greater height than was known in their previous experience. 
Dr. S. rera a number of specimens taken from a dirt-bed 
Ri 
o 
bout midway between the base and the summit of the mound, 
which was over thirty feet in height. The specimens consisted 
Of bones of fishes, of lo ggerhead turtles, and of d 
Pieces of coarse, unadorned pottery, and implements made 
Shell. One of the most curious of the latter was a kind ae 
au 
aria gigantea, by knocking or grinding off the whorls and planing 
own one side of the handle. The use of this kind of imple- 
ment is difficult to conjecture. Six of them were found lying 
together in a kind of pocket beneath a mass of charcoal. An. 

interesting point is that no stone implements occurred in this 
ed, while they did occur in another bed near the summit 
f o aps indicating an advance in civilization. 
For the specimens exhibi e Academy ebted to 
Mr. E. W. Blatchford, who had defrayed the expenses of excavation. 
In the shell-strata of the mound the most abundant species we re 
irginica, Callista gigantea, Mercenaria Par actra Ravenelii, Car- 
tum isocardia, Busycon perversum, , Strombus alatus, Natica 
Vote Cassidulus corona, Susciolóvia Aen F. nemis a and Oliva 
litterata. Some of these shells now occur rarely if at all in the vicinity 
of db mound, whilethey are very abundant on the barrier islands of the 
