two sections of rhizome, one from stratum IV and the 
other from stratum VI, were recovered. Minor differ- 
ences show that at least two species are present, but 
lack of definitive characters makes impossible the accu- 
rate identification of these remains. 
SALICACEAE 
Populus tremuloides Michaux FI. Bor. Amer. 2 
(1803) 243. 
Poplar leaves were recovered from stratum V. The 
occurrence of this species with Typha and Seirpus fur- 
ther emphasizes the probable occurrence of higher pre- 
cipitation in the area of Bat Cave in former times. 
JUGLANDACEAE 
Juglans major (7Vorr.) Heller in Muhlenbergia 1 
(1900) 50. 
Numerous fragments of walnut shells occur through- 
out the Bat Cave deposits. 
FAGACEAE 
Quercus Gambellii Nutta// in Journ. Acad. Nat. 
Sci. Phila. ser. 2, 1 (1848) 179. 
Leaf remains of Q. Gambellii were found in strata V 
and VI. 
Quercus grisea Liebmann in Overs. Danske Vidensk. 
Selsk. Forh. 1854 (1854) 171. 
This species is represented in the deposit by leaves 
from stratum II upward. 
Quercus sp. 
Acorns were found in abundance in stratum III. A 
single acorn shell was recovered from stratum V. 
g 
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