1898] Ells — Formations, Etc., of Ottawa District. 183 



veloped in the neighboring city ot Hull, all the quarries at this 

 place being in the Trenton limestone while the characteristic 

 cliffs about Ottawa are very conspicuous geological features. 



In the eastern portion of the city, though rarely appearing 

 at the surface, it is known to underlie the greater part of lower 

 town, situated to the south of the canal and extending south almost 

 to the head of the Deep Cut, and east as far as Chapel street, 

 whence the limit of the formation crosses the Rideau about the 

 east end of the railway bridge in the western part of New 

 Edinborough. In Centre town the limestones occupy the hill on 

 which the Parliament buildings are placed as far south as Wel- 

 lington street where they are met by the overlap of the Utica 

 shales, whence, from the corner of Bank street, the outline of 

 the formation takes the form of a curve, the western line of 

 which is a short distance west of Lyon, on Lisgar street. The 

 line of the formation then curves eastward and reaches Bank 

 street again near the Canada Atlantic tracks, whence, crossing 

 the Bank street road, it follows a flat curve and returns to the 

 west of the road again, a short distance to the north of the 

 Rideau near Billing's Bridge. It then keeps close to the line of 

 the canal as far as the enlargement or pond at Dow's Swamp, 

 when the outline strikes south along the course of the Ottawa 

 and Prescott railway, and the contact with the Utica rs seen 

 about half a mile west of what was formerly known as Chaudiere 

 Junction. The limestones are also well exposed in quarries and 

 outcrops to the south of Hog's Back and along the road up the 

 south side of the river for several hundred yards, where they 

 are underlain by the Black River formation To the east of 

 this outline the country is mostly occupied by the dark bitu- 

 minous shales of the Utica, which gradually pass upward into 

 the overlying Lorraine formation, with its grey shales a!nd sandy 

 beds. A broad plateau of the Trenton is also seen about City 

 View post office and to the north, resting upon the Black River 



