’ ss Geological Equivalents. 137 
many of which have fourteen or fifteen.prominent rings each. 
They are about half an inch in length. Syringopora ramulosa. 
a. Ill. LOWER SECONDARY. 
SECOND GRAYWACKE. 
Coal slate and grit. Filices (ferns,) Equisetacex (rush-like,) Ly- 
copodiacee (ground-pine-like,) Cycadz (fan-palms,) Palme 
(palm-like,) Cann, (reed-like,) Cacti, (prickly-pear-like.)* 
Rubble and slaty wacke. Encrinus dicyclus, Pentacrinites tu- 
berculatus? Orthocera conica, Cancer triloboides, Asapnus 
caudatus, Spirifer Walcottii, Spirifer (not described,) Bellero- 
phon tenuifascia? Coscinopora macropora, (taken from retipora,) 
Gorgonia bacillaris. 
Millstone grit. No organized remains discovered. 
New red and. gray sandstone, Saliferous. Lingula mytiloides, 
Enerinus giganteus. | 
IV. UPPER SECONDARY. 
* Oo.ttIc Rocks. 
Shell grit, Calcareous grit. Bellerophon (two species, not ascer- 
tamed,) 'Terebratula perovalis, T. ovoides, Spirifer attenuatus? 
S. trigonalis? 
oral rag. Encrinus interruptus, E. teretiformis, Orthocera cir- 
cularis, Madrepora limbata, Astrea stylophora, A. porosa, Sar- 
cinula auleticon, S. microphthalma, Diploctenium pluma, Lith- 
odendron cespitosum, Columnaria alveolata, (most common of 
the petrifactions over the Pucker Street cavern, on the Helder- 
berg,) Catenipora auleticon, Cyathophyllum hypocrateriformis, 
Gorgonia infundibuliformis, Asaphus Hausmannii; Terebratula 
spiriferoides, Nobis. Fine specimens of both are found along 
sli: € south shore of Lake Erie, in the ledge ; particularly, near 
Eighteen-mile creek. 
V. TERTIARY. 
Clay, plastic and marly. Charred wood or lignite, embracing 
Small masses of amber, and large quantities of iron pyrites, 
on stones and bog ore. Placatula pectinoides found in the 
Pytites. Ina kind of green calcareous sand, in New Jersey, 
humerous organic relics are found, for which I refer to Dr. Mor- 
Will soo tved, the subject demands further examination. The original specimen 
n be examined y M. Brongniart, whose decision will be final. 
. 15 
b 
Vou. XXI.—No. 1. 
ne 
ie ine. 
