

Bibliography. 155 



limestone, or at most the Clinton group beneath, or to use more definite 

 terms, that it is of the upper Silurian series, of which the Clinton group 

 appears at present to be considered the American base; and this se- 

 quence would accord with that displayed in the great Appalachian 

 trough, in its nearest approach to the Green Mountain range in the valley 

 of the Hudson. A calcareous formation very fully supplied with upper 

 Silurian remains, has already been mentioned in prior reports, as met 

 with in Gaspe at intervals from the very extremity of that district to 

 Matapedia Lake, a distance of about 150 miles. The geographical 

 character of the intermediate 220 miles, the great similarity in the meta- 

 morphic condition of the Njtre Dame and Green Mountains, and the 

 continuous run of the recognized rocks of the Hudson River group, from 

 Lake Champlain along the south bank of the St. Lawrence to Cape 

 Rosier, render it probable that the upper Silurian localities will be 

 found to have a nearly direct continuous outcrop connexion; and as 

 the micaceo-calcareous rocks of Memphramagog have I believe been 

 traced thence by Prof. Adams, the state geologist of Vermont, along 

 the eastern flank of the Green Mountains, to the southern boundary of 

 the state near Halifax, whence they proceed into Massachusetts, it seems 

 probable that the upper Silurian group will thus be found continuous 

 perhaps upwards of 700 miles. In Gaspe an arenaceous formation suc- 

 ceeds the upper Silurian, the conditions of which appear to resemble 

 those of ihe Chemung and Portage group of New York, probably inclu- 

 ding the old red sandstone ; and as this formation in Gaspe is found to 

 possess a thickness of 7000 feet, and in its Western American develop- 

 ment does not die away before reaching the banks of the Mississippi, 

 W is not unreasonable to expect that they should follow the upper Silu- 

 rian zone, in its southwestern course from the eastern extremity of 

 Gaspe, and display a conspicuous figure, either in a metamorphic or 

 unaltered condition, between it and the carboniferous areas of Eastern 

 America, to one of which New Brunswick belongs, while another is 

 fnet with in the state of Rhode Island, and in a metamorphic condition 

 in Massachusetts. Whether the mica slates southeast of the micaceo- 

 calcareous rocks on the line of section, be part of the Gaspe sandstones 

 in an altered state, can until further investigation, be only conjectural." 



On the following pages, the author remarks upon the beds of mag- 

 netic and specular oxyds of iron— bog iron and iron ocher— chromic 

 iron, discovered on the 26th lot in the seventh range of Bolton— -bog 

 Manganese or wad— copper ore— gold and the various rocks of econom- 

 ical importance. The gold of the Chaudiere valley was obtained on 

 the banks of a small stream called the Touffe des Pins, a tributary 

 emptying into the right bank of the Chaudiere about fifty-eight miles 

 from Quebec. It occurs in the seigniory of Rigaud Vaudreuil, the 

 Property of the heirs of the late C. E. Chaussegros de Lery, Lsq. 

 The largest pieces collected by Mr. C. de Lery, one of the present 

 proprietors, weigh 1068, 1056 and 744 grains. About 75 lbs. ot 

 gravel, washed in the presence of Mr. Logan, produced about two 

 grains of gold to a bushel. A notice of this gold is given in the bill 

 volume of this Journal, 1848, p. 274, 275. 



The results of the analyses of mineral waters by Mr. Hunt, may ap- 

 pear in another number of this Journal; 



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