274 



Notices of Memoirs — P. Macnaii 



abed 



Bouldgp Clay 





59 h 



PlG. 2. — Sketch-map and section along the railway at Arkleston, Paisley. 



a, Blackbyre Limestone with Gallowhill Limestone phase at top ; 



b, Cementstone with rootlets ; c, Entomostracan Limestone ; d, shales 

 and fireclay ; e, dolerite sill ; /, Hurlet coal ; g, alum shale ; h, Hurlet 

 Limestone. 



