= 
Hale on the Geology of South Alabama. 357 
cu = again five miles below on the river, 
ion in the i eg in both of which in- 
stances the opines are “fall, grown ; whereas in the lower 
both at Claiborne and Coffeeville, they are Faprineipelly of imma- 
ture size, a peculiarity which may possibly be owing to the cir- 
cumstance of their exposure in the latter case to the influence of 
a current, when small and easily drifted. 
The next bed, No. 7, is a deposit of fine.yellow quartzose sand 
with a small Mdintare of silicate of iron; in some instances it is" 
highly ferruginous. It contains nearly all the different species of 
fossils found in the series. Its medium height is about fift 
species of radiata, mollusca, reptiles, fish, and mammifers, 
amounting in all to about three hundred. Those which embrace .- 
the greatest number of individuals, belong to the genera, Cythe- 
rea, Cardita, _Crassatella, Pectunculus, Crepidula, Oliva, ‘Turni- 
them seem to have been promiscuously thrown together, as 
they had been exposed to the violent agitation of the w 
The testacea of this bed are all marine and nearly all of the ) 
the littoral kind. Not a single species of _— or freshwater 
shells has yet been found in any of these be 
small seam of earthy lignite, distainisintelhi in small fi en- 
- tary masses, forms a somewhat striking feature about midway in 
the yellow. sand : and associated with it were found the only re- 
mains yet discovered of terrestrial mammalia. e greater por- 
tion of the fossils peculiar to this bed have already been described. 
We shall therefore omit the notice of such, and at present sexed 
allude to those in our cabinet which are unique. One of the 
most remarkable of these is that of a Nautilus, which oa to 
be restricted to this deposit. Our specimen is too imperfect to 
admit of a very particular description. In its entire state it could 
not have been less than one foot in diameter. We have also ob- 
tained from this deposit wre new species of Echinoderms, and 
Madrepores, and many new species of Molluscs, of the genera 
F'usus, Terebra, Ancillaria, Phasianella, Murex, ‘Turretilla, Sola- 
rium, Scalaria, Pyrula, Venus, Arca, Tellina 
Of fish, there are remains of the Pristis, spines of the Ray, vari- 
ous species of palatal teeth, vertebrae of many unknown Prime and 
teeth and vertebre of the shark. Of terrestrial mammalia there ar 
several maxillary fragments of small quadrupeds. ‘The most inter. 
esting relic of this class is omin ofa quadrupedy whose ty 
