172 The Ottawa Naturalist. 



limestone which forms a ridge rising to the height of about a 

 hundred feet above the Ottawa River at this place. The sand 

 or gravel in which the shells were original!}/ embedded has 

 nearly all been removed and the bare rock is exposed at the 

 surface. This is also an excellent spot for collecting fossils from 

 the underlying rocks. 



For those members of our Club who are interested in fossil 

 collecting an excellent opportunity is afforded for the study of 

 the fauna of the Black River formation in the many scattered 

 outliers which are found to the south of the Ottawa River, in 

 the townships of Bromley, Stafford and Wilberforce. Those 

 between Douglas and Cobden can be easily reached, either by 

 the Ottawa and Parry Sound railway, from Douglas station, or 

 from Cobden on the Canadian Pacific. Large outliers occur in 

 Stafford near the lower end of Muskrat Lake in which the fossils 

 are abundant and easily obtained. The celebrated localit}' at 

 the Paquette's Rapids on the Ottawa, near the foot of Allumettc 

 Island, is now easily reached by the Pontiac and Pacific Junction 

 railway, which now runs to that point, but a week's trip or even 

 less will enable one to visit all the principal areas to the south 

 of the river and furnish plenty of material for future study. 

 The Black River formation at one time must have had a very 

 extensive development, since its scattered outliers are now found 

 over a very considerable extent of country, lying between the 

 Ottawa and the Madawaska Rivers. Among the most exten- 

 sive, and at the same time most readily accessible of these, is 

 a series of outcrops to the south of Arnprior, lying to the north 

 of the mountain ridge which extends from the vicinity of White 

 Lake to Pakenham. These have as 3-et been but little studied, 

 but the rocks contain an abundance of fossils at many points 

 and some of the principal exposures can be reached in a distance 

 of four to five miles south from either Arnprior or Galetta. 



For convenience of reference a synopsis of the various 

 geological formations to be seen at the several .stations is 

 appended. The elevations of the different points along the line 



