522 THE DEVONIAN PERIOD. 



Plant-bed No. 8 1 foot 10 inches. 



Fine-grained, tough, but fissile sandstones, rather coarse shales, often 

 of a greenish cast, and at the top a thin layer of very black shale 

 very rich in plants. The middle portion does not contain so many 

 plant remains, but the lower is as well stocked as the leaves of a her- 

 barium. The following are the fossils I have collected from it : — 



Cordaites liobbii, Daws. As usual in great profusion, and in 

 very fine specimens. — C irayisilionis, Goeppt. Occasional. — 

 C. ca7inceformis, Brongn. — (?) Asterophyllites acicularis, Daws. 

 Quite common, together with one or two other species 

 apparently new, which occur also in Bed 7. — Annularia 

 acuminata^ Daws. Extremely common, especially in certain 

 layers. — Pinnularia dispalmis, Daws. Abundant. — (?) Lyco- 

 podites Matthewl, Daws. Rare. — Cyclopteris obtusa, Lesqx. — • 

 CyclopteriSj sp. no v. — Neuropteris polymorpha, Daws. Quite 

 frequent in detached pinnules. — Hymenophyllites subfurcatiis, 

 Daws. Very common. — Pecopteris [Alethop.) discrepans, 

 Daws. This is the most abundant fern in this bed. It 

 occurs usually in detached pinnules, though not unfrequently 

 in considerable fronds. — Pecoptej^is [Alethop.). Besides the 

 above, there are three or four other species, some of which 

 occur also in Beds 6 and 7. — Cardiocarpum cornuium, Daws. 

 Not very common. — C. obliqumn, Daws. Also not very 

 common. — C. Cramj^Hj Hartt. Quite common. — Several other 

 species of plants not yet determined. — Lisects. Two species, two 

 specimens. One was obtained by my friend, Mr James Hegan. 



Sandstones and coarse shales, with badly preserved Cordaites Pobbii, 

 Daws., C. tra7isitionis, Goeppt., and Pecopteris (A.) dis- 

 crepans ......... 26 feet. 



Fine-grained, light-greenish shale, with obscure remains . 1 foot. 



Sandstone and shales, Avith Calamites and obscure markings . 23 feet. 



This brings up the section to those beds which are exposed within 

 a few feet of low- water mark. Owing to the short time during which 

 the rocks are laid bare by the fall of the tide, to their hardness, and 

 to the way in which they are rounded down by the surf, the work of 

 exploring this part of the section is very difficult, and I have not been 

 able to give them a very close examination. A very rich plant-bed 

 crops out within a short distance of low- water mark on the very east- 

 ern margin of the Ledges. Its place in the section is somewhere near 

 Bed 8. It is characterized by Cyclopteris valida, Daws., which 



