C. LAPWORTH ON THE MOPPAT SEEIES. 315 



Fig. 28. — Vertical Section IV. Upper Haetpell Shale (DoWs Linn). 



Shivery shale, black and grey 25 EL-ES 



Basal seam of Birkhill Shale, drab- 

 coloured tough shale 



Green shales and mudstone 



Seam of soft black shale, pyritous 

 shivery shales, yellow and grey . . . 



Seam of soft black carbonaceous shale. 

 Yellow and green shivery shales 



Seams of soft black flaky shale, with 

 partings of white and yellow sandy 

 muds, shales, and clays 



Thin-bedded light green shivery 

 shales, with a few hard seams of 

 flagstone, slightly calcareous 



^ Thick-bedded light green mudstones 



Seam of black carbonaceous shale, 

 2 inches in thickness 



Dark grey mudstones, some almost 

 black, with yellow or orange-colour- 

 ed surface 



rs 



^3 



Soft black Hags and shales, with part- ^. „ — • ■■ 

 ings of white clay 



Hard slaty shales, black, thin-bedded. „. , , „ . — 



^ 



Diplograptus acuminatus. 



Crowded with Climacograpius 

 in half- relief. 



No fossils. 



Diplograptus truncatus. 

 Climacograpius bicornis (tu- 

 berculatum). 



Dicellograptus aneeps. Crowd- 

 ed with Diplogr. truncatus. 



Dicellograptus aneeps. 

 Diplogr. truncatus, &c. 



No fossils. 



J Diplograptus, Climacograp- 

 { tus', Dicellograptus. 



Diplograptus foliaceus. 



Pleurograptus linearis, Diplo- 

 graptus quadrimucronatus. 



Dictyonema moffatensis. 



Pleurograptus linearis, Am- 

 phig'raptus, sp., Diplogra- 

 ptus foliaceus. 



(Continued from "Vertical Section III.) 



y2 



