37 



Up the hill, thick beds of limestone are visible back 

 of the little corner house, and between the beds of limestone 

 are layers of shale with Tetragraptus and other graptolites. 



Continuing up Davidson street to Cote du Passage, 

 across that street and a short distance up a lane, one 

 comes upon a heavy bed of limestone conglomerate with 

 red and green shales on either side. As practically all 

 the measures between this conglomerate and the centre 











:-~r 



Anticline in Shumardia limestone. Davidson street, Levis. 



of the anticline are exposed, and as there is no change of 

 dip, it is evident that the conglomerate is above the 

 Shumardia limestone. About 175 feet (53-3 m.) of shale 

 and limestone intervene between the two. 



If this conglomerate which may be called conglomerate 

 A, is followed eastward to the next street, it will be seen 

 a short distance up the road from the top of the ruined 

 elevator, and at the corner of the street above is a poor 

 exposure of another conglomerate, marked B on the accom- 

 panying map. Descending the hill from Cote du Passage 

 the same shales and limestones noted above the anticline 

 are again observable in rock cuts. The centre of the 



