27 



ASSISE e. Gray shale with flaggy layers, the lamination due to Of Assise e. 

 seams covered with shells, alternating with others where the shells are 

 scarce. The rock has spangles of silvery gray mica. 



Fossils 



Acrothyra proavia ventrals 160, dorsals 160 



A crassa " 1 " 



Acrothele avia. , " 9 " 10 



A abavia " 5 " 



Obolus lens " 17 " 16 



O lens-longus " 3 " 1 



Leptobolus collicia " 18 " 26 



L atavus " 69 " 63 



Lingulella, sp " 1 



Indiana ovalis right v. 1 left v. 1 



Bradorona scrutator .... " 3 " 1 



B observator-ligata. ' " 2 " 2 



Bradoria vigilans. 6 " 2 



B rugulosa " 5 " 3 



Schmidtella ? pervetus. . . " 2 " 1 



S ? acuta " 3 " _ 3 



ASSISE f. The rock containing the fossils is a gray shale, more _ 



J J Of Assise f. 



sandy than that of assise . Some of the layers have a purplish tinge, 



and the spangles of silvery mica that occur are larger than those of 

 the assise below. The highest band of these shales is quite silicious. 



Fossils 



Acrothyra proavia-prima ? ventral 1 , dorsal 



A crassa? " 1 " 



Acrothele proles " 23 " 12 



L - collicia " 6 " 2 



Leptobolus collicia collis " 21 " 16 



L atavus " " 1 



Bradorona perspicator-major. . . . right v. 1 left v 1 



B -scrutator " " 1 



Solenopleura (?) Bretouensis part 2 



At the top of this assise the Etcheminian terrane is overlain by a 

 body of felsite conglomerate, which rises in a wall-like mass one hun. 

 dred feet or more in height, and turns the course of the stream west- 

 ward. 



Conglomerate 



Further down stream it is seen that this conglomerate, which is re- afc the base 

 garded as the base of the St. John terrane, has a thickness of thirty group. 



