, 
‘ 
is 
4 
: 
tee 
through the Farmington valley to New Haven Bay. 447 
upper terrace is well displayed, and especially along by Sims- 
bury and for a mile and more to the north, where it is 130 feet 
above low water in the river and quite wide. But on the east 
side of the valley the terrace above Farmington is for the most 
small, no large stream, capable of affording transported mate- 
nal, flowing from that direction because of the nearness of the 
“es range 
region of many slopes, was under one continuously sloping 
water-plane, having a fall, if reckoned on the basis of the pres- 
ent slope of the land, of 290 feet in 77 miles. The northward- 
Owing streams and the streams at equilibrium as to erosion 
and deposition, or at “base level,” if any there were, were 
merged with the southward flowing streams into one great 
southward hurrying flood, the depth exceeding 120 feet at 
maximum height and 40 feet where shallowest. It is an exam- 
ple, though on an extreme scale, of the kind of change over a 
region which a modern flood may produce in hydraulic condi- 
Hons and in the activity of fluvial forces. 
The flood produced other effects over the New Haven region 
south of the Mt. Carmel gap, which are of much geological in- 
terest. These will make the subject of another article. 
A few words only are here added as to the bearing of the 
facts reviewed on the question with regard to the slope of 
land in the era of the flood. 
n my paper on “flood of the Connecticut River valley,” in 
volume xxiii of this Journal (1882), it is apparently proved 
that the southward slope of the land was much less during 
the flood than now—the calculated mean diminution from 
the Sound to Springfield being one foot a mile, and from 
Springfield to Haverhill 24 feet a mile. Hence we should 
expect to find evidence of some corresponding difference of slope 
