THE 



AMERICAN 

 JOURNAL OF SCIENCE, &c. 



GEOLOGY, MINERALOGY, TOPOGRAPHY, &c. 



Art. I. — A Sketch of the Geology, Mineralogy, and 

 Scenery of the Regions contiguous to the River Connec- 

 ticut; with a Geological Map and Drawings of Organic 

 Remains ; and occasional Botanical Notices. Read he- 

 fore the Jlmerican Geological Society at their Sitting, 

 Sept. ilth, 1822; hythe'Rev. Edward Hitchcock, A.M. 

 of Conway, Massachusetts. 



PART I. 



The region embraced by the accompanying map, and to 

 which this sketch is principally confined, is about 150 

 miles long and 30 broad; extending from New-Haven to 

 Bellows' Falls. A leading object of this map is to give an 

 accurate view of the secondary tract extending from New- 

 Haven 110 miles northerly to Northfield. But it is protracted 

 30 or 40 miles beyond this, on the north, so as to embrace 

 probably all the argillite along this river. A considerable 

 extent of primitive is also exhibited on the borders of the 

 secondary. The map is not colored according to the Wer- 

 nerian distinctions of primitive, transition and secondary; nor 

 according to Macculloch's division of rocks into unstratified 

 and stratified : but an attempt has been made to give every 

 particular rock that position and extent on the map which 

 it actually occupies on this portion of the earth's surface. 

 Every geologist knows, that perfect accuracy in these res^ 

 pects, on a map of such extent, would require a degree of 

 labour and research, which, none but those whose whole 

 time is devoted to such pursuits, could bestow. Indeed, so 



Vol. VI.— No. 1. I 



