BEDS OE THE ESTUARY OF THE EX. 353 



it does not appear north of the first zone. In the second zone, 

 soft red sandstone, overlying the Murchisonite conglomerate, occurs 

 at Lympstone and in the beds extending from Powderham to 

 Oxton, near which place the Murchisonite beds crop out and con- 

 tinue until they are buried under the Greensand of Great Haldon. 

 In the third zone similar sand-rock, considered from its position 

 to overlie the Murchisonite beds, occurs along the vale of the 

 Clyst, at Topsham, and again at Exminster, from which place the 

 Murchisonite beds extend over a space of more than two miles, 

 when beds without Murchisonite crop out and continue to the 

 igneous rocks near Haldon House, these beds being probably the 

 same as those to the west of Mamhead Parsonage and west of 

 Dawlish. In the fourth zone the soft sandstone is again recognized 

 overlying the Murchisonite beds at East Wonford ; a space of three 

 miles then occurs in which I have not been able to see any 

 exposures of rock (though aware that the same conglomerate 

 exists there) ; and these beds, similar to those cropping out in the 

 third zone from under the fine Murchisonite conglomerate of the 

 Exminster district, appear on the strike of those beds, occupying the 

 district between them and the igneous rocks at Pocombe. In the 

 district which has now been described the sections exposed, with the 

 exception of the cliffs by the sea, are few, and generally consist of 

 roadside-cuttings; so that it is more than probable that many 

 misconceptions have taken place, although care has been taken to 

 guard against them. 



A bed of decomposed sandstone is seen overlying the Trias on the 

 road from Teignmouth to Dawlish and along the top of the cliffs 

 between that town and Cockwood ; it also occurs near Beavis 

 Bridge, Spratford, Rixtail, and Colemansford near Ideford ; and Mr. 

 P. 0. Hutchinson, of Sidmouth, informs me that it is found between 

 Otterton and Ladram Bay. As it closely resembles the soft red 

 beds, it is likely to mislead, but may generally be recognized by the 

 presence of flints ; whenever any doubt existed, this bed has been 

 regarded as recomposed. As the object of this memoir is merely to 

 show the wide extent over which Murchisonite is found, and that 

 this mineral occurs here only in particular beds, which may for that 

 reason be regarded as keys to the geology of the district, minute 

 descriptions of the faults and of the minor changes in the characters 

 of the beds have not been given. 



To my friends Mr. A. Wyatt Edgell, of Lympstone, Mr. P. 0. 

 Hutchinson, of Sidmouth, Mr. G. Pycroft, of Kenton, and Mr. G. S. 

 Saunders, of Exminster, my thanks are especially due for their great 

 assistance. 



Discussion. 



Mr. "Whitaker stated that the officers of the Geological Survey 

 are engaged in mapping these New-Red beds, but that they have 

 not worked over the district referred to by Mr. Orinerod. He 

 remarked that the divisions of the New Red can be carried into 



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