78 



ASSISE E. Id. 



The fossiliferous layers in this assise consist of gray and brownish gray 

 shale, somewhat charged with fine sand, the sand grains being largely 

 feldspathic particles. The rock was open in grain, and there are grains of 

 a soft, grass green mineral, and of kaolinized feldspar (Gregwa shale). 

 The species are as follows : 



Fossils of E Id Acrothyra signata-tarda ventrals 24, dorsals 27 



brook. Acrotreta papillata " 2 " 1 



Lingulepis Gregwa. " 42 " 38 



var. robusta. " 5 " 1 



Orthotheca tube " 2 



Bradorona spectator right v. left v. 2 



B acuta " 2 " 



At Boundary brook in the Indian brook valley, some miles S.W. of 

 Dugald brook there is some variation in the strata of this assise and a 

 fuller fauna. The rock is a dark brownish gray feldspathic sandstone, 

 full of small gray or pink grains of feldspar, and of darker feldspathic and 

 quartzose grains ; fragments of dark gray felsite occur half an inch in 

 diameter and less. The rock is not strongly cemented and is traversed by 

 calcareous veins. The surfaces of the fossils are much corroded, and fre- 

 quently only a thin film represents the fossil. The folJ owing occur here. 



Fossils of E Id Acrotreta papillata ventrals 25, dorsals 24 



atBoundary A _ _ ^ 2 ' 



Leptobolus atavus, mut. tritavus. ' 5 " 3 



L cf collicia " 3 1 



Lingulepis Gregwa " 40 " 44 



L sp " 5 " 3 



Obolus sp " 2 " 



Orthotheca sp. (broken) tube. . . " . . " 2 



Bradorona perspicator right v. 2 left v. 2 



B spectator " 5 " 9 



B observator " 4 " 8 



B benepuncta. " 3 " 2 



Bradoria vigilans, mut " 1 " 



Escasona rutellum-prima " " 1 



Schmidtella(?)pervetus-concinna. " " 1 



