334 



DR WHEELTON HIND ON THE LAMELLIBRANCH AND 



ing to the Upper Flora were obtained, so that the horizon at which the flora changes 

 is almost the same level as that in Midlothian. I think that all the lamellibranchs 



Boulder Clay. 



J Dark Shales. 



Thin Coal. 



Shales and Fireclay, nodular. 

 Fireclay, with Sandstone ribs 

 and irony nodules (" Bullet" of Glenboig). 



Sandstone. 

 Fireclay (mined). 



Interval concealed. 



Sandstone. 



Dark grey and blue stained Shales. 



Grey Shales with rib or nodules of Clayband Ironstone. ^ 



Cementstone, varies much in thickness, sometimes in two bands / 



Shales with hard rib of Kingle or Gannister. 



Sandy Shales and Fireclay. 



:.■ Faky Sandstone 



Soft gritty white and yellowish 

 false-bedded Sandstone in thick beds, 

 wrought for moulding sand. 



(Anthracomya truncata, sp. nov. 



Dark Shales J Pterinopecten papyraceus. 



Impure ferruginous Limestone (Elonichthys pectinatus. 



(This is regarded as the position 



of the Castlecary Limestone.) 



f Zaphrentis Omaliiisi, M. Ed. & H. 

 Densiphyllum charlestonense , Thorn. 

 Limatuiina alternate/,. 

 Myalina Verneuillii. 

 Posidoniella Icevis. 

 Prothyris elegans. 

 Protoschizodus curtus. 

 Solenom orpha cylin drica. 

 Solenomya brevis. 

 Tellinomorpha Hindii. 

 Ptychomphalus Marcouianus. 



Fig. 1. — Vertical Section of Strata at Greenfoot Quarry, near Gain Farm, 3 miles N. of Coatbridge. 



were obtained from beds containing a Lower Carboniferous flora, and just below the 

 point where the Upper and Lower floras meet." 



Certain species which were found to occur in the Basement beds of the Bristol 



MUMMAJ 



Fireclay. 



Clay Shale, lower part with marine shells. \ I 

 Shelly Calcareous IRONSTONE. y--< 



Coal 2"-4". 

 Fireclay. 



fCtenodonta Icevirostris. 



Edmondia excentrica. 

 , , sulcata. 



Limatuiina alternata. 



Nuculana attenuata. 



Posidoniella eorrugata. 



Protoscldzodus curtus. 



Pterinopecten Whitei. 



Sanguinolites occidentalis. 



Schizodus W'heeleri. 



Tellinomorpha Hindii. 

 filadodus striatus (tooth). 



Fig. 2.— Section on the North Bank of the River Avon, West of the Railway 

 Viaduct, 1\ miles W.N.W. of Linlithgow. Scale, 1 inch = 30 feet. 



Coalfield were sent to me by Mr Bolton for my opinion. Amongst them I recognised 

 three species which were common to those beds and the Millstone Grit of Scotland, 

 namely, Palaeolima retifera, Shumard, Grammatodon tenuistriatus, M. and H., sp., 



