On a New Geological Formation in Canada. 297 



Canada where the sedimentation has a wonderfully close 

 resemblance to European types. This was long ago 

 pointed out by Sir William Dawson, J. W. Salter and E. 

 Billings. 



The following species of fossils are provisionally recorded 

 as characteristic of this Knoydart formation. Similar or 

 identical species will no doubt be found sooner or later in 

 other parts of Antigonisli and other counties of Eastern 

 Nova Scotia. 



Fossil Organic Kemains from Knoydart Formation, 

 Nova Scotia. 



1. Pteraspis, sp. cf. P. Crouchii. 



2. Cephalaspis sp. 



3. Onchus Murchisoni, Agassiz. 



4 Psammosteus, sp., cf. P. Anglicus, Traquair. 



Mr. Woodward writes : The McArras Brook specimens 

 " represent the base of the lower Old Ped Sandstone of 

 Britain." 



Ann. Eep. new ser. vol 2, 1886 (1887, Montreal), p. 49P, 

 under the head of " F. Devonian," Mr. Hugh Fletcher 

 describes three distinct groups of Devonian strata corres- 

 ponding closely with those of New Brunswick," and gives' 

 the following table of equivalencies : — 



New Brunswick. Nova Scotia. 



3. Mispeck group. - 3. Upper Eed Slate and 



Sandstone group. 

 2. Dadoxylon Sandstone 2. Middle Gray Sandstone 



and Cordaite shale. and Slate group. 



1. Bloomsbury Conglomerate. 1. Lower Conglomerate 



group. 



After giving the distribution of the above in Nova 

 Scotia, in general, the first reference to the age of the 

 McArras Brook strata is then given on page 49P, which 



