Cambrian Rocks in Acadia. 2 oS 
ties of older formations, within which the terreins around 
Lake Superior may be classed. Until the controversies 
relative to the comparative age of those rock masses are 
settled by the discovery of characteristic faunas, we cannot 
tell how they compare with the older series, or the Cam- 
brian System, in Eastern North America. 
SERIES B. 
In speaking of the sub-divisions of this series, the writer 
proposes to use hereafter the terms recommended for divi- 
sions of a rank inferior to ‘‘Series.”. The term “Stage” will 
therefore take the place of ‘‘ Division,” as heretofore used in 
describing the parts of this terrein. 
Stage 1. This includes the lower part of the series, as 
high up as Paradoxides are found. The divisions of 
this stage are as follows :— 
Band (Assise) a. Hard grey sandstone or quartzite. 
Fossils: none known. 
Band (or Assise) b. Dark-grey sandstones and grey 
sandy shales. Fossils: Hllipsocephalus, Agraulos, 
Hipponicharion, Beyrichona, Xe. 
Band (or Assise) ¢. Grey shales. Fossils : Paradoxides, 
Conocoryphe, Liostracus, Microdiscus, Agnostus, &c. 
Band (or Assise) d. Dark-grey shales. Fossils : Para- 
doxides, Ptychoparia, Solenopleura, Microdiscus, Agnos- 
tus, &c., of different species from those in Assise ¢. 
Stage 2. This consists of grey flags and sandy shales. 
The sub-divisions have not been worked out, but the 
stage corresponds to the lower half of the Olenus 
Zone in Europe. No species of the genus Olenus 
have been found in it. 
Stage 3. Dark-grey and black shales. Fossils: Cteno- 
pyge, Kutorgina, Orthis, &c. This corresponds to the 
upper half of the Olenus Zone of Europe. The shales 
in Cape Breton, which contain Peltura and Spherop- 
thalmus belong here. There are in the St. John 
h 
