y. J. (x. S. vol. xlvi.J 



Fig. l.—iViip nfthe Dhtrihidion of Ike, Divoiiiiia Roc.kii !,i the. DUtncI Wa^t «f 'IW<,imii ; slu, 

 ami tlw FosM Finfh, proiu,,,, Uppn- ,n,'<l Lnwrr hennn, 



Brhaioa of Hi,; roh'iinic Si'rie.i 



Fig. 2-y«y, „/,/„. lJMh,a; ,///,. Devu.,i..n /.•„,/„. ;„ >!,. DM,-i l..>wef„ 



the ]{„;,■ },;,,„ ,„>,! the f/M,m //HI,: ./,„».;„„ //„ l<i„„.ln.i.,to„ S,,r- 

 <vw«o,i mnl the new FousH /■■nuls. 



Post-Ci-ct(io 

 CreLaoeoiis. 



E.XPLANATION OF FIGS. 1 & 2. 



S Culni-iiirasures. 



i U.D. Upper-Devonian Slates. 



3 U.D.L. Upper-Wevoniau Limestone. 



K\ V. Volcanic Tnft's, Sclialateins. ami Diabas 

 H (Harder Diabase masses, lilaek.) 



O. Goniatile-beds : Gonuitifes found. 



Apbanite, bard Diabj 



, 5s== E. Eifclian Slates. 

 '- -I-]-' L.D. Lower Devoni; 

 Pleurodictymn-beds. 



