354 PROCEEDINGS OF THE GEOLOGieAL SOCIETY. [Mai. 7, 



of rock to enable one to observe directly the relations of the rock- 

 groups to each other. 



Eeturning to Lynton I collected a few fossils in the grey calcareous 

 grits on each side of the Yalley of Eocks, and snatched rather than 

 collected some blocks full of fossils from a set of fragments that had 

 slipped from the cliffs above into the valley of the East Lyne. I 

 believe the fossiliferous beds near the hiU-tops of the valley of East 

 Lyne to be very nearly on the same horizon with those of the Yalley 

 of Eocks, and to be above the hard siliceous grit-band mentioned 

 above as exposed in the road cuttings down from Lynton to Lyn- 

 mouth ; so that fossils may probably be found almost everywhere in 

 the upper part of these hill-sides. I found them certainly at several 

 places in the lanes and fields above Lynton, south of the Yalley of 

 Eocks, in grits that weathered to a reddish brown. 



These fossils were examined by Mr. W. H. Baily, and Mr. David- 

 son was also kind enough to look at the Brachiopoda for me. On the 

 authority of those gentlemen they contained the following species : — 



Fenestella antiqua. Spirifera speciosa, var. paradoxa. 



Athyris concentrica. Streptorhynchus creni stria ? or umbra- 



Chonetes sordida*. culum. 



Ehynchonella, sp. ? Pleurotomaria aspera. 



Spirifera aperturatat ? or caudifera. Actinocrinus (or Cyathocrinus) variabilis, 



hysterica ? Cyathocrinus ellipticus. 



Isevicosta (ostiolata, Schlot.). Phacops latifrons. 



There is one little quarry on the hill-top, south of the Yalley of 

 Eocks, near where a small tumulus $ is marked on the Ordnance 

 map, in a grey and reddish mottled calcareous-looking rock, which 

 is full of fossils, especially Fenestella and a small Orthis or Chonetes. 

 The beds in this quarry dip south at 30°. 



6. Lynton to Ilfracombe. — Proceeding from Lynton to Ilfracombe, I 

 was again disappointed in my expectations of seeing new quarries or 

 cuttings on or near the road, which keeps as much as possible on the 

 high ground. As before, near Exmoor, this high ground shows a 

 gently undulating dreary-looking expanse, rising into continuous 

 moorlands towards the interior, and ending in lofty cliffs along the 

 coast. The unbroken outline of the moorland watershed, and the 

 gradual increase in the number and depth of the gullies and ravines 

 that run off on either side of it, attest the influence of the rain, and 

 its resulting rivers, in carving out all the picturesque features of the 



* Mr. Davidson seems to be of opinion that this is only a variety of the Car- 

 boniferous species, Hardrensis (Devonian Brach. p. 94). 



t [Fragments and imperfect casts of a large Spirifera, with irregular and wide 

 ribs, beautifully covered with very fine, close, concentric lines, which Mr. David- 

 son says he could not determine to his satisfaction ; adding that it is probably to 

 a fragment of this shell that Phillips applied Schlotheim's term Spirifera aper- 

 turata (Pal. Foss. Cornwall, &c. p. 77. pi. xxx. fig. 133). See also Mr. Davidson's 

 remarks, at^pp. 26 & 116 of his " Devonian Fossils" in Mem. Pal. Soc.).] Note 

 by Mr. Baily. 



J Curiously enough I found this tumulus to be, not a regular conical mound or 

 cairn, like those which are common in Wales and in many parts of England, but 

 a circular rampart, exactly like the "Raths" scattered over the eouth of Ireland. 



