LOWER CAMBRIAN TERRANE 323 



the conglomerate seen in the bank, a little distance below the outcrop 

 of Algonkian rocks.' 



Cafe Breton Section. — The most recent publication of Mr. 

 Matthew on the subject of the Etcheminian fauna appeared in 

 December, 1899.^ Therein he states: 



The physical conditions and history of the Etcheminian de- 

 posits in Cape Breton are very closely parallel to those in New 



Brunswick These sections show no Loxvcr Cambrian, 



nor have the faunas of this part of the system (Paradoxides and 

 Protolenus) been recognized in Cape Breton. The fauna which 

 is found in the lowest sandstones and shales above the basal con- 

 glomerate of the Cambrian appears to be Upper Cambrian 



It is therefore more reasonable to expect a discordance of strata 

 in this region between the Cambrian and the Etcheminian than 

 in the region of New Brunswick where the Lower Cambrian is 

 present. 



The fauna found in the beds identified as Etcheminian is 

 mainly brachiopods, and appears to me to be of a Middle Cam- 

 brian character, such as occurs in the beds above the St. John 

 quartzite in the Hanford Brook section. 



Two diagrammatic sections are given to show the supposed 

 relations of the Etcheminian and the superjacent Upper Cam- 

 brian rocks. The fauna and Fig. 2 of the section strongly 

 suggest that the so-called Etcheminian is Middle Cambrian and 

 that the Lower Cambrian and the Etcheminian are absent in 



1 Mr. Matthew refers to the section on Hanford Brook in the following 

 papers : 



On a Basal Series of Cambrian Rocks in Acadia : Can. Rec. Sci., Vol. Ill, 

 1888, p. 27. Estimated section of Basal series 1200 feet thick ; notes occur- 

 rence of fossils. 



On Cambrian Organisms in Acadia : Trans. Roy. Soc. Can., Jan. 1889, Vol. 

 VII, 1890, Sec. IV, pp. 138, 139. Republishes section of 188S, and gives a dia- 

 grammatic figure of section and sketch map, calling the Basal series ' Etche- 

 minian.' 



List of Fossils : Bull. Nat. Hist. Soc, New Brunswick, No. 10, 1892. 

 ' Basal Series of Rocks or Etcheminian Stage.' Abstract of section published 

 in 1888. 



The Protolenus Fauna : Trans. N. Y. Acad. Sci., Vol. XIV, 1895, p. 108. 

 Diagrammatic section of Etcheminian on Hanford Brook. 



A Paleozoic Terrane Beneath the Cambrian : Annals N. Y. Acad. Sci., Vol. 

 XII, 1899, p. 44. Introduces section figure published in 1895. 



2 Preliminary Notice of the Etcheminian Fauna of Cape Breton: Bull. Nat. 

 His.t. Soc. New Brunswick, Vol. IV, 1899, pp. 198-20S. 



