I 



EXPLANATION OF THE PLATES. 



Platb Page 



I Geological Map of the South-West Highlands, illuc 

 I. \ trating Mr. E. B. Bailey's paper on the Structure of j- 82 

 that area 



j Geological Map of tub Country East and South-east ] 

 n. -^ OF Bala Lake, illustrating INIiss G. L, EUes's paper on i 132 

 [ the Structure and Bock-Succession of that area J 



Plates 



/^Map OF the area round Moel-y-faen ; NoRTii-To-SouTjr'i 

 I Serial Sections ACROSS the Llangollen Synclinorium; j 

 jTT Tr J and Geological Sketch-Map of the Country around ! -.-j. 

 j Llangollen, illustrating the paper by Dr. L. J. Wills i 

 I & Mr. Bernard Sniitli on the Tectonics of tlie Lower j 

 \^ Palaeozoic Rocks of that area ..,] 



{Microscope-Sections illustrating Dr. II. H. Thomas's j 

 paper on certain Xenolithic Tertiary Minor Intrusions }- 229 

 in the Island of Mull j 



Plate 



yy f Microscope-Sections illustrating Mr. W. G. Shannon's ) tfn^ 

 1 P'lper ou a Composite Sill at Newton Abbot 1 



r T^yioPTERis, etc., illustrating tlie paper by Prof. A. C. j 

 XII < Seward & Mr. B. E. Holttum ou Jurassic Plants from j- 271 

 i Ceylon j 



{SrH£XOFii:iii.s, etc.. illustrating Prof. A. C. Seward's 1 

 paper on a Collection of Carboniferous Plants f'roui ^ 278 

 Peru J 



Plates 



\iv e -Y\T { Lepiocleidvs ■•H'fersies. gen. et sp. nov., illustrating 1 .-,„_ 

 Ai\ (X A\ I j^j. ^ ^ Andrews's paper on that fossil / -^^ 



I^VlEWOFTHE SiEI{RA-LeONE MOUNTAINS; CoNTACT of^ 



I COARSE NoRITE WITH NORMAL XoRITE ; COARSE 



' NORITE INVADING NORMAL NORITE ; BeERBACIIITE i .^^q 



~ " j INVADING NORMAL Norite; and Microscope-Sections j 

 I of these and other rocks, illustrating Dr. F. Dixey's | 

 i^ paper on the Norite of Sierra Leone J 



