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AMERICAN 
JOURNAL OF SCIENCE, &c. 
oe en ere easel &e, 
Arr. 1.—A_ Sketch ae the Ge cology, Wiscraléry, and’ 
esas: ee the A a So contiguous to the River Connec- 
ticut; with ological Map and Drawings of Organic 
wains ; and occasional Botanical eet Read be- 
hs tet oe eee’ 
PARTI, 
_ Tue 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 aa 
accurate view of the secondary tract extending from New- 
aven 110 miles northerly to Northfield. But itis protracted 
30 or 40 miles beyond this, on the north, so as to embrace 
probably all ave a mee is iver. A considerable 
of, tive is also exhibited on bees gone of ag 
accor ne ti ullo 
and stratified : bak an peo ae been nad 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 
Vou. VI Ma, 5 : 
