[EtAiLEY] PRESIDENTIAL ADDRESS 11 



From the above observations it may be concluded that during a 

 portion of the Devonian age the land areas of Acadia were both more 

 extensive and of much higher elevation than was the case in any 

 earlier period of their history. These land areas were clothed with 

 vegetation and air-breathing types of animals, such as Neuropterous 

 types of insects, Myriapoda and Snails tenanted the forests of the 

 era^ Batrachian foot prints have also been found by Matthew, 

 although they are not common. 



The Perry Group 



The rocks to which this name has been applied consist of coarse 

 conglomerate and sandstones, of brownish red colour, resting uncon- 

 formably upon Silurian and older strata and made up of their detritus. 

 In places, such as Perry, Maine, on the shores of Passamaquoddy 

 Bay, they contain plant remains which were regarded by Dawson as 

 of Upper Devonian age, a view which has been confirmed by later 

 observers. From their distribution around Passamaquoddy Bay, 

 and their evidently marine origin, it seems obvious that this Bay, 

 forming so considerable an indentation of the southern coast of New 

 Brunswick, was in existence at the time and with nearly its present 

 limits, while further east the occurrence of similar beds at Point 

 Lepreau and on the Kennebecasis river near St. John, possibly also 

 about St. Martins and on the Albert County coast, leads to like con- 

 clusions as regards the great Bay of Fundy trough. The interior of 

 New Brunswick, now occupied by the great central coal field, was 

 probably also submerged. 



A feature of the Perry Group is the extent to which, as seen' 

 about St. Andrews, the stratified rocks of the latter are penetrated by 

 basic volcanic rocks, dolerite, diabase, etc., occurring both as dykes 

 and sills, but not of sufficient extent to affect materially the geography 

 of the region. 



Lower Carboniferous 



The line of separation between the Perry Group and Lower 

 Carboniferous is not easily drawn. The lower beds of the latter are 

 very similar to the former, are of similar origin, and hold similar 

 relations to older formations. For these reasons the Perry rocks were, 

 at the time of the publication of the Geological Survey maps, regarded 

 as being also Lower Carboniferous age and were so represented. But 

 above rocks of the Perry Group proper, with organic remains now 

 accepted as Upper Devonian, is a very considerable thickness of strata 



^ Little River group. 



