Division 0. 



a. Red conglomerate. 

 6. Red and green sandy slates. 

 . Division 1. 



a. Coarse gray sandstone or quartzite. 



b. Coarse gray sandy slate. 



c. Fine gray and dark-gray slaty shales. 



d. Fine black carbonaceous slaty shales. 



The two last contain the Lower Paradoxides fauna of Sweden. 

 Division 2. 



a. Dark-gray slates with seams of gray sandstone. 



b. Coarse gray slates and gray flagstones. 



c. Gray sandstones and coarse slates (Linguloid shells). 

 Division 8. 



a. Dark gray finely laminated slates. 



b. Black carbonaceous and dark gray slates, less fissile than the 



last.* 



Two other divisions were described, but these were found to be repe- 

 titions of those of Division 3. When the faunas of Division 3 were 

 studied the latter was found to contain a number of faunas which 

 were designated by the additional letters c., d and e, the two last 

 mentioned being Ordovician. 



After eliminating from the described rocks of the Cambrian areas ^ape Breton 

 in Cape Breton some which are Pre-Cambrian, it is not at all difficult similar to that 

 to recognize this entire series of deposits in the Cambrian succession 

 of that island. The known fossiliferous beds of the island were Upper 

 Cambrian, and the others, by their position relative to these, represented 

 the middle and lower part of the St. John series. The confirmation of 

 this view suggested by the lithological appearanca of the beds was 

 obtained when the faunas were collected and studied. 



The study of the faunas of the St. John group, begun in 1881, was 

 not completed until twelve years thereafter, but as the palaeontology 

 unravelled itself, it was found to be in close accord with what had 

 been determined as to the Cambrian succession in Europe. 



illustrations of the Fauna of the St. John Group. Trans. Roy. Soc. Can., vol. 

 I., sec. iv., p. 88, 1882. 



