8 Conglomerates underlying the Carboniferous Limestone. 



for about 50 yards. Up to this point the deposits are red in 

 colour, but from here upstream they are green or yellowish- 

 green, and this is the point apparently taken on the one-inch 

 geological map as the dividing line between the Conglomerates 

 and the Lower Limestone Shales. Proceeding upstream thiese 

 red sandstones are overlain for about 100 yards by a series 

 of current -bedded yellowish -green sandstones and fine- 

 grained conglomerates containing quartz pebbles. These 

 sandstones have exactly the same dip and direction of dip as 

 the red sandstones underlying them. They are succeeded, at 

 the bend of the stream, b}: a bed oi bluish-green shale about 

 12 in. thick, which is rather interesting, since it appears to 

 contain some traces of carbonaceous matter which may repre- 

 sent plant remains. It is also a consistent bed appearing 

 similarl}' in Chapel Beck, and its dip is in agreement with 

 those of the beds below. Above the shale band for about 

 120 j^ards the stream flows over light green conglomerate, 

 fairly coarse, pebbles up to two inches across, containing 

 a fair amount of quartz, pink felspars and an interesting 

 assembly of rocks, both sedimentary and igneous. This is 

 then overlain by a dark sand^^ rock which, for. the time being, 

 we may term a mudstone, and then in the quarry near to 

 Sproatgill Vvell a dun-coloured limestone is exposed. Thus 

 in this beck a sequence can be traced from the red sandstones 

 and conglomerate to the limestone, the dips all the way 

 through being constant in direction and amount. 



{b) In Chapel Beck there is a similar section agreeing with 

 that in Micklegill Beck in practically every detail. There is 

 thus no need to repeat the description except to note that here 

 again the dip is about eight degrees, though the din^ction is 

 slightly more northerly; that the beds seem a little disturbed, 

 and some splendid faulted pebbles were obtained here ; that 

 the red conglomerates are coarser, with pebbles q in. to 10 in. 

 across ; and that the bluish-green shale band is again present. 



(c) Blind Beck is only a small stream and does not give 

 the complete sections mentioned above, simply because it 

 does not give exposures higher than the red sandstones. It is 

 useful in showing, however, that tlie red sandstones are present 

 in the lower portion of its course. 



{To be contitiucd). 



As one of Pitman's Mastery Scries appears The Masfery of Water, 



by the author of ' The Triumph of .Man,' whoe\^er he may be. By the 

 aid of numerous photographs, diagrams, etc., an entertaining accoimt 

 is given of water and its various aspects, in addition to which there are 

 articles on Water Supply, Engineering Schemes in connection with 

 water, Canals, Reservoirs, Rivers, Pumps, etc. 



Naturalist 



