13 



In the angle between the Belfontain branch and the 

 main river, the escarpment is higher and presents a more 

 complete section, including the Lockport dolomite. This 

 locality is less favourable for collecting than those already 

 referred to, but it is instructive in that it proves the com- 

 plete absence of both the Rochester shale and the Clinton 

 beds which are exposed on the face of the cuesta at 

 Grimsby and which also occur in the Niagara gorge. 



The Lockport dolomite furnishes but few fossils, 

 among which may be mentioned obscure lithistid sponges 

 and indeterminable stromatoporoids. Besides these, the 

 following corals may be obtained: 



Alveolites sp. 



Favosites niagarensis Hall. 



Halysites catenulatus Linnceus. 



Syr'ngopora cf. tenella Rominger. 

 The ascent to he top of the cliff is somewhat difficult, 

 but the view well repays the effort. 



BIBLIOGRAPHY. 



See the literature cited for Excursion B 3. 



1. Logan, Sir W. E Geol. Sur. Can., Rep. 1863, pp. 



315-317; 327-328. 



2. Parks, W. A Dept. Mines, Can., Mines Branch, 



The Building and Ornamental 

 Stones of Canada, pp. 146-164. 



3. Miller, W. G Bur. Mines, Ont., Rep. 1904, Pt. 



ii, PP- 39-.5S. 95, 126. 



4. Schuchert, Charles.. .Forthcoming article on the Catar- 



act formation in Bull. Geol. Soc. 

 Am., Vol. 24. 



