Geol. Mag. 1867. 



VoL IV. PI. XII. 



^^■^'JI^cLL 



G. R. De Wilde, fecit. ~~ ^ Hailes & Co., Imp. 



To illustrate papers by the Rev, T. G. Bonnev, & Mr. Thomas Belt. 

 Fig-s. I & 2, Glacial action near Llandudno. 

 Figs. 3 — 5, New Trilobites, from North Wales. 



