Geology and Fossil llora of P.E.I. 161 



"habit of growth is that of Walchia. The species is near to W. 

 imhrlcati of the European Permian, but sufficiently distinct to 

 deserve a name, and I have therefore called it W. imbricatula 

 <Fig. 2). 



urn ^0^*^ 



Fig. 2. Walclxia iiribr ic atida, S.N., Tiiaa , Prince Edward Island. 

 Prom a drawing by Mr. Bain. 



It is to be observed that, in the red sandstones of Prince 

 Edward Island, all the more delicate plants, and even twigs of 

 coniferous trees, have completely lost their organic matter and 

 are represented by mere impressions, stains, or casts in clay or 

 sand, so that it is very difficult to ascertain their minute charac- 

 ters. 



The general result, in so far as the subdivision of the beds is con 

 cerned, would seem to be that the lower series is distinctly 

 Permo-carboniferous, that its extent is considerably greater than 

 we supposed in 1871, that there is a well-characterised overlying 

 Trias, and that the intermediate series, whether Permian or 

 Lower Triassic, is of somewhat difficult local definition; but that 

 its fossils, so far as they go, lean to the Permian side. The further 

 researches of local observers like Mr. Bain may be expected to 

 throw new light on these points, and to enable a more exact 

 separation to be made of the several deposits. 



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