1895. | NEW YORK ACADEMY OF SCIENCES. 75 
Section (: Series of broad, nearly horizontal layers, on the 
east bank of the creek, from beneath Trenton Falls village 
bridge to the first curve of the creek in the rapids above the 
milldam. 
la—g. Black compact limestone, nodular and espe- 
cially crinoidal at base, purer at top, with intercalated 
shaly layers and with a few light-colored lenticles. Lo 6! 
Crinoid fragments a a. Endoceras. 
Orthis testudinaria a a. Rafinesquina alternata. 
Orthoceras large* c. Plectambonites sericea. 
Asaphus platycephalus c. Bellerophon bilobatus. 
Calymene senaria c. Foraminifera. 
Prasopora lycoperdon. 
2. Light gray, fine grained sandy layer, composed 
of comminuted fragments. Breaks readily and in even 
layers. ee Oe 
Orthis testudinaria a a. Zygospira recurvirostra. 
Rafinesquina alternata a. Hyolithes. 
3a—d. Encrinal shaly layers at the milldam inter- 
bedded with more compact fossiliferous layers. About 3 
feet are covered by the dam. rir 
Crinoid stems a a a. Orthoceras* a. 
Asaphus platycephalus a. Orthis testudinaria ce. 
4a—d. Hard compact, barren layers, alternating with 
more impure nodular portions or crystalline lenticles. 
Fossils in lenticles only. Londo” 
Dailmanella testudinaria aa a. Trematis terminalis. 
Plectorthis xquivalvis a a. Schizocrania filosa, or a 
Asaphus platycephalus c. new species. 
Crinoid fragments a a. Calymene senaria x. 
Gomphoceras. Plectambonites sericea rv. 
5. Shaly at top, impure, nodular, in part compact 
partly crystalline and partly shaly ; lenticular. 2 at! 
Crinoid fragments a a a. Stictopora. 
Prasopora lycoperdon (large celled) aa. Lingula. 
Orthoceras a a. Plectambonites sericea. 
Zygospira recurvirostra a a. Ambonychia bellistriata ? 
Asaphus platycephalus c. Ptilodictya r. 
Dalmanella testudinaria ¢. Calymene senaria rY. 
* This is probably the form mentioned. by Vanuxem in his 1842 report (page 47) from 
these layers, to which he assigns the name of Orthoceras striatum: Our specimens 
are too fragmentary for determination. 
