northwestern edge of Hagersville (8). The strata exposed 

 are as follows: — 



Thickness 

 Feet. Metres. 



6 — Soil and drift I -305 



5 — A grey to brownish blue, semi-crys- 

 talline limestone containing much dark bluish 

 chert. The layers are inclined to be rather 

 massive, but, where weathered, split into 

 thin uneven layers, which are sometimes 

 shaly. Corals and crinoid fragments are 

 abundant 9-16 2-796 



4 — Shaly parting, not always conspic- 

 uous 0-08 -025 



3 — Bluish grey, semi-crystalline lime- 

 stone, containing a relatively small amount 

 of grey to white chert. The whole mass is 

 abundantly fossiliferous and sometimes even 

 matted with corals 4-6 I -424 



2 — A dark bluish-grey, fine-grained lime- 

 stone practically free from chert. The fossils 

 are much less abundant than in the layers 

 above. The upper four inches are often shaly 

 and sometimes shaly partings occur between 

 beds in the upper part 6-83 2-085 



1 — Rough, cherty, bluish limestone to 

 the level of water in the lowest water hole. . 6-25 I -906 

 The fossils that may be obtained from the five horizons 

 indicated above are given in the second column of the list 

 on page 92. 



Oriskany and Onondaga at William Shoap's 

 quarry. — Near Mr. Shoap's house, about a mile and a 

 half westward from Ingles' quarry, a small run falls over 

 a ledge of Springvale sandstone and cherty Onondaga 

 limestone. There is thus preserved a good exposure of 

 both formations, together with some of the underlying 

 beds. The section at this point is as follows: — 



Thickness 

 Feet. Metres. 

 5 — Soil and drift 4 1-22 



Onondaga limestone. 



4 — Cherty, blue to grey limestone. This 

 rock is mostly chert and quite fossiliferous. 

 In the upper part of these beds the corals 



