III. 





By Professor C. LLOYD MORGAN, F.Gl.S., 

 Assoc. H.S.M. 



THE picturesque little valley near Wick, through which 

 the little brook called the River Boyd jlows, affords 

 to the geologist an opportunity of examining an interesting 

 little patch of Palaeozoic rocks. As the geology of this 

 locality does not seem to be well understood, I propose to 

 supply a few notes in illustration of the accompanying 

 sketch map. 



If we enter the valley at its lower end from the Marsh- 

 field road (lower left-hand corner in the map), we see some 

 indications of the Basement Beds of the Trias, and then find 

 ourselves in Millstone Grit. The beds are variable. There 

 are fissile sandstones with mica ; some strong close-grained 

 light-coloured sandstones of great hardness and durability ; 

 shales and marly beds ; a bed a few inches thick which 

 gives an excellent tough clay ; and several thin but well- 

 marked seams of coal. Beyond some indications of carboni- 

 ferous plant remains, I have found no fossils, except in one 



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