50. Notice of Hayden's Geological Essays. 
instances, be formed, spent) by amenpeiition of the 
angular portions of a stone, by various chemical agencies, 
ense nu 
ber, and in our view, the immensely greater number of peb- 
bles, present unquestionable evidence of haxing been neeyeh 
to their rounded form by attrition. 
The attrition of the common | waters of. the nixtlle wont 
even that exerted during the comparatively short period of 
the prevalence of the deluge of 1 Noah, would do very little 
towards producing so mighty a result, and we ‘must assign 
this operation to the more recent periods of the: peclege: 
of the great chaotic deluge, whose existence is distinctly 
recorded in the first chapter of Genesis, and equally ad- 
mitted by all geologists. However strongly inclined, we 
have neither time nor room to pursue this fruitful | topic any 
further, but must leave it to return to Mr. Hayden’s book. 
n Prd te of se waamies het our-alluvial formations 
a nee we ions often observed in the alluvial 
plain of - ae ate and in other alluvial regions of Con- 
necticut—exhibiting frequently, a delicacy of “fcaiemA in the 
layers of gravel and sand, which makes them appear as if 
they had, but a momen ‘babe; wetalneditheis impulse and 
position from: undulating water, and as if they an — 
the very eddies, and gyrations of the wave.» _ 
a support the position,” thst so © currents. flowed from the 
north-east to th the riv. 
ers in the vicinity of Bator mm generally r Tun inva 
direetion from north to-south. “Ip almost every instance,” 
he remarks, * where the rolled pebbles abound, they are 
in much the greatest quantities on the west or south-west 
side of the river or creek.” - He states also, that there are. 
great accumulations. cf-sand_ and gravel in such: places as 
correspond with the e southern mouths or outlets of v : 
and streams, or with their southern sides, and but small por 
tions or none of. these: ee are founds in re eee 
rections. wees 
*~ sane g ty me : i 4 miei my Tae 
Se a ee : al SB Vin to Ge ks EE 
