78 



Collingwood formation. — The lowest formation, 

 the Collingwood, formerly correlated with the Utica of 

 New York, has been differentiated recently by Raymond, 

 since it contains a sufficiently distinct fauna, although 

 presenting the same lithological appearance. It consists 

 of fissile black shales, and is well exposed on the hill in the 

 eastern edge of Little Current. 



Eden clays. — The lower part of the Eden consists of 

 a great thickness of clay shale, ioo feet (30-5 metres) thick, 

 with scarcely a trace of limestone. The fauna includes 

 Diplograptns peosta and species of Leptobolus and 

 Primitia, in addition to the trilobites mentioned in the 

 table of formations. The best exposures are found three 

 miles (5 km.) southeast of Little Current, along the road to 

 Sheguindah. 



Eden limestones. — Along the same road to She- 

 guindah the basal part of the overlying strata, consisting 

 of limestones interbedded with clays, is exposed. The 

 upper part of these strata may be seen immediately south 

 of the great Richmond exposures on the eastern side of 

 Cape Smyth. Here, owing to the southward dip of the 

 strata, the top of the Eden limestone section is seen at the 

 northern end of the Lorraine exposures which line the shore 

 for several miles. From this upper part of the Eden section 

 Ulrich and Bassler identified provisionally. : — 



Amplexopora persimilis (variety of A. septosa 



Ulrich) . 

 Callopora communis James. 

 Callopora sigillarioides Ulrich. 

 Coeloclema communis Ulrich. 

 Dekayella ulrichi (Nicholson). 

 Stigmatella near nana Ulrich and Bassler. 



A much larger fauua has been collected from other 

 localities, as far west as Tamarac point and the eastern 

 shore of Gore bay. 



Lorraine. — A visit to the Clay Cliffs in the Cape 

 Smyth area certainly should include at least a brief glance 

 at the Lorraine exposures which line the shore at water's 

 edge for nearly two miles south of the Clay Cliffs. Here, 



