80 



ASSISE E. 26. 



The rock is a dark purplish gray sandstone, with abundant grains of 

 non-kaolinized red feldspar. The sandstone is strongly cemented, and has 

 some small calcite veins ; from this and from other conditions in this rock, 

 it would appear that the cement is in part calcareous. There is enough 

 iron in the sandstone to give it a, rusty brown color when weathered. 

 The rock contains pieces of black slate and small pebbles of quartz. 



Acrothyra signata-tarda ventrals 1, dorsals 



Lingulepis longinervis " 9 " 9 



Orthotheca, tube 2 



Bradorona perspicator-magna, right " 2, left v. 



ASSISE E. 2c. 



Fossils of the ^^ e roc ^ coa *"dining the fossils is a fine grained greenish gray sandstone 

 assises E 26 with purplish clouding, but the main body of the assise is a purplish gray 

 feldspathic sandstone. The fossils found in this assise were : 



Acrothyra signata-orta ventrals 3, dorsals 2 



Bradorona observator-lsevis, right valve 2, left v. 



This is the highest assise in which the Lower Etcheminian Fauna was 

 found; above this, in the next division new species come in, and one new 

 genus appears. Between the two fossiliferous zones is a thickness of 

 about 50 feet, in which only broken and imperfect Lingulella, were 

 collected. In this thickness of barren measures though the rock still 

 remains coarse and sandy, the purplish red color has disappeared, and the 

 gray color prevalent in the upper division, is found. 



ASSISE E. 3a. 



The fossiliferous layers are of lavender gray or pure gray shale, 

 weathering yellowish in the cracks, so probably containing iron-carbonate. 

 There is some felsite debris or feldspar grains, and minute spangles of 

 white mica. The species present are : 



Acrothyra proavia-prima ventrals 7, dorsals 10 



Acrothele abavia " 4 " 1 



Leptobolus sp " " 1 



Lingulella sp " 1 " 



Oboluslens.. 1 



