MINERALS AND GEOLOGY OF CANADA. 443 
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Fig. 236. Fig. 287. 
Stricklandia elongata Phacops bufo 
(Billings). (Green). 
In addition to these forms, Spirifer mucronatus (fig. 238), Spari- 
gera concentrica (fig. 239), and Atrypa reticularis (fig. 240), may 
also be mentioned as being of common occurrence. 
The Corniferous formation (No. 16 in the sketch-map, fig. 249) 
occupies two extensive areas in Western Canada, although covered 
and obscured in most places by Drift accumulations. These areas 
comprise portions of the counties of Welland, Haldimand, Norfolk, 
Brant, Oxford, Perth, Huron, and Bruce, on the one hand, and parts 
of Kent, Essex, and Lambton on the other. A comparatively broad 
tract, occupied by the Hamilton formation, intervenes between these 
two areas. The latter formation, as shewn some years ago by Sir 
William Logan, rests in a depression on the summit of a flat but im- 
portant anticlinal which traverses this western peninsula in a general 
east and west direction. Exposures of Corniferous strata occur more 
particularly on or near to the shore of Lake Erie in the townships of 
Bertie, Humberstone (Rama’s Farm, near Port Colborne), Dunn, 
Rainham, Walpole, Woodhouse, &c.; also in North and South 
Cayuga; near Woodstock village; largely at St. Mary’s ; in Car- 
rick township, on a branch of the Maitland, and also in the adjoining 
township of Brant; at Point Douglas on Lake Huron, and elsewhere 
along the coast, in the townships of Bruce and Kincardine; further 
south, near Port Albert, and on the Maitland, near Goderich ; and 
also. at the extreme west of the peninsula, as near Amherstburg, on 
the River Detroit. 
Many of these exposures, and more especially that of the last- 
named locality in Malden township on the Detroit, furnish excellent 
