66 JVew Publications. [Jan., 



ter are still more flattering than they have been at any former 

 time; especially in regard to the prospects and value of the Pitts- 

 burg Company's location. We are informed that this stock now 

 sells at eighty per cent above par; that an analysis of the copper 

 recently found in their deepest workings, yields silver in value 

 equal to $10,000 per ton! 



Leaving the region of Lake Superior, and proceeding to Lake 

 Huron, we are informed by Capt. Bayfield that the sandstone 

 with its conglomerates is succeeded by limestone; but the geolo- 

 gical position in the series is not clearly set forth in the treatise 

 before us. It is probable, however, that the upper beds of the 

 limestone belong in the New York series, to the Niagara group, 

 inasmuch as the pentamerus oblongus, is one of the fossils which 

 occur in the limestone; but it is at the same time probable also, 

 that in passing over the space between Lake Superior and Huron, 

 the lower limestones also exist, and that among them there will 

 be found the Trenton limestone, a rock which is very persistent 

 in this country. It is stated however, that the sandstones of Lake 

 Superior are wanting, and that the limestones rest directly upon 

 the primary rocks; excepting at or near Lake Cloche where the 

 quartz or sandstone is interposed between the limestone and gran- 

 ite. 



From Lake Huron eastward, the same limestone has been traced 

 across Lake Simcoe to the Rice Lakes and thence on the north of 

 Lake Ontario to Kingston and the Thousand islands, and then 

 again by Bytown, Perth and Lake Chat, across the Ottawa to 

 Montreal and Quebec. From this statement of Capt. Bayfield, 

 we are satisfied that he is far too general and loose in his account 

 of the rocks of this region ; for when he speaks of the limestones 

 of the Thousand islands and the region thereabouts, we know very 

 well that they all belong to the lower limestones of the New 

 York system; consisting of the calciferous sandstone, birdseye and 

 Trenton limestones. 



The northern shore of the St. Lawrence, from Cape Tourment 

 eastward to the Mingan islands, is composed of primary rocks. 

 While upon the southern, beds of limestone and graywacke occur. 



