70 NEW YORK STATE MUSEUM 



essential change of dip, for this same southward dip is well apparent as far 

 as the coulee or Barre brook where Perce fossils were also found. The 

 latter seem to be the summit beds of the limestones and from them the 

 following species were obtained : 



Spiriferarenosus ^ Megalanterls thunei 



S. murchisoni ^ Leptostrophia irene 



Chonetes canadensis Coelospira 

 C. antiopa 



The beds are gray and red, nodular on weathering, but normally a 

 limestone conglomerate whose fragments are derived from the Perce strata. 

 The outcrop is in the strike and the beds apparently rise uniformly into the 

 Murailles. A displacement is evident along the bed of the brook but its 

 amount was not estimated. Red peak, which is the highest and eastern- 

 most of the Murailles, is capped by beds of this rock apparently conform- 

 able in dip to those below. The displacement of the tinted Perce strata 

 (the term being here used as indicative of the horizon of the Perce rock) 

 against the Cape Barre beds is evident on the south road leading up the 

 mountain side to the Grande Coupe, as well as in the coulee. In the great 

 sea front of Red peak, the high face rising 660 feet over the water is 

 believed to bring up the lower gray limestones in conformity and, though 

 these beds are difficult of access, it is likely that here are the strata which 

 fill the broken interval between the Perce beds and those beneath, the 

 rocks of Cape Barre and perhaps also in part those of Cape Blanc. Logan 

 and Ells speak of the appearance further along the shore of Malbay of a 

 dark shale with Ampyx and other fossils (not specifically determined) and 

 hard by a thin limestone with Halysites. 



Cape Blanc 



Cape Blanc massive. The succession of the limestones and shales of 

 the great Perce anticline is presented under a twofold aspect. One of these, 

 we have described. It is that best displayed and most clearly comprehen- 

 sible. The other is seen in the promontory of Cape Blanc or Whitehead. 



From Cape Canon southward for a distance of two miles sweeps 



