88 Description of Entomostraca, &c. 



Feet. Inches. 



1. Reddish sandstone - - - - 90 



2. Dark carbonaceous shale, with Estherioe ; where thickest, 



it is generally hard and flaggy - - - 12 



3. Limestone, fossiliferous ; usually of a dun colour, and wea- 



thering buff - - - - 4 



4. Coal, not exceeding - - - - 7 



5. Fire-clay, with Stigmarian rootlets - - - 5 



6. Keddish sandstone ; many of the beds thin and slaty 30 



7. Shales, with a little poor ironstone - - - 4 



8. Coal (irregular) - - - - 10 



9. Yellow sandstone - - - - 4 



10. Drab, slaty sandstone, passing into argillaceo- arenaceous 



shale - - - - - 10 



11. Arenaceous shale, slightly calcareous - - 3 



" ' These beds dip east by soutb ; all of tliem belong to the 

 Mountain-hinestone group, though they are not far from 

 its base. 



" * No. 1. This sandstone is overlaid by many beds of 

 limestone, and associated with sandstones, shales, and coals, 

 which form the mass of the Mountain-limestone group, ex- 

 tending into Northumberland. 



" ' No. 2. The Estherian shale. This contains another 

 Entomostracan form.* There are also a number of broken 

 fragments of plants ; the most numerous being reed-like 

 stems, longitudinally ribbed, but without joints, Coniferites 

 verticillatus (Tatef), and Sphenopteris Jolmstoniana (TateJ). 

 Attached to the plant-stems is Spirorhis carhonarius. Scales 

 of Ganoid Fishes are abundant ; and I have determined 

 teeth and scales of Holoptychius Hihherti in this shale. In 

 the lower part of the deposit I found Chonetes Hardrensis and 

 Nucula gihhosa. This bed, taken in connection with that 

 below it, shows changes of conditions from marine to estua- 

 rine, and probably to fresh water. 



" ' No. 3. This limestone is very fossiliferous, containing : — 



Strophomena analoga. 

 Productus gigantens. 

 Productus semireticulatus. 

 Lithodendron junceum. 

 Lithodendron affiiie. 

 Lithostrotion Portlocki. 



Stenopora Uimida, 

 Favosites parasitica. 

 Astrceopora cyclostoma. 

 Syringopiora geniculata. 

 Aulnpora gigas. § 



" ' No. 10. In the arenaceous shales I have found Lingula 

 squamiformis , and an elongated form allied to, but which 

 may be different from, Lingula 



* See page 87. 



t " Fossil Flora of the Eastern Border," p. 309. % Ibid., p. 306. 



§ " Transact, of the Berwickshire Nat. Club,' vol. iv. p. 152—154. 



