520 THE DEVONIAN PERIOD. 



Sandstones 2 feet 3 inches. 



Shale, with obscure remains of plants . . „ 2-| „ 



Sandstones, barren, so far as examined . . 4 „ 10 „ 



Sandstone and shale, with a few Calamites and 



Cordaites . . . • • „ 9 „ 



Sandstone and coarse shale, with obscure mark- 

 ings . . . . . . . 5 ,, 10 „ 



Light greenish, coarse shale, with fem-sterns, 



Cordaites, and obscure markings, Carpolites (?) „ 7 „ 



Sandstones and coarse shales, with badly pre- 

 served vegetable remains . . . . 1 8 „ 9 „ 



Plant-bed No. 4 1 ,, „ 



Coarse shales, affording at the point where the line of section crosses 

 it— 



Cordaites Robbii, Daws. — Calamites transitions, Goeppt. — Neu- 

 ropteris polymorpha, Daws. — Psilophyton glabrum, Daws. — 

 Pinnidaria dispalans, Daws. 



I have examined at two different points, in the eastern part of this 

 locality, a bed which appears to correspond to this. It is characterized 

 there by a very beautiful Neuropteris (N. Dawsoni, Hartt) with long 

 linear lanceolate pinnules decurrent on the rachis, to which they form 

 a broad wing. The pinnules are often four inches in length. This 

 is one of the most beautiful ferns occurring at the locality. Several 

 other new forms are associated with it. Among these is a magnificent 

 Cardiocarpum, nearly two inches in diameter (C. Baileyi, Daw.). 



Sandstone with obscure markings . . .9 feet 6 inches. 



Plant-bed No. 5 6 „ 



Soft, fine-grained light-greenish shale. 



Cordaites Robbii, Daws. Extremely abundant. — Calamites canm- 

 formis, Brongn. Found occasionally. — Psilophyton (?) glabrum, 

 Daws. — (?) Aster ophyllites acicularis, Daws. — Pecopteris [Ale- 

 thopteris) discrepans, Daws. Quite abundant.— Sphenopteris 

 marginata, Daws. Quite abundant. — Sphenopteris margi- 

 nata. — Pecopteris, sp. nov. (?) — Hymenophyllites, sp. (?) — Neu- 

 ropteris polymorpha, Daws. Very abundant. — Spirorbis 

 occurs in the bed, attached to the leaves of Cordaites. I have 

 never detected it in any of the beds higher up. 



Compact flaggy sandstones and coarse shales, with a few 

 plants, 8 feet. 



