J. D. Dana—‘Kames” of the Connecticut Raver Valley. 453 
(8.) The stratified drift of the valley consists ordinarily of 
fine material below, and coarser toward or at the to he bot- 
tom portion being Leonie of clay or loam, o san 
ordinary hydraulic prineiples—that the flow of the depositing 
waters was, as a general thing, less rapid at the time of the 
early depositions, cd most so during the later or that of maxi- 
mum flood. Exceptions exist along those streams that were 
oie and sometimes at the mouths of tributaries to large 
rea 
rep op ermost sandy layer, of two or three feet thickness, 
frequently exists, indicating that the ebb commenced in a les- 
sened rate o 
4.) The portion of the terrace formation in a river valley 
that is nearest to the river or adjoins the channel-way, may, 
and often does, consist largely of beds of coarse heli or cob- 
ble-stones, while one or two hundred yards from the 
cae sand; the 
coarseness may diminish down stream, because of greate 
remoteness from the source of coarse materia 1, and also aia 
of a change in the rate of flow, producing less power of trans- 
portation and so allowing of a deposition of the sands drifted 
out above, 
(5.) Terraces of different — of coarseness and of dif- 
ferent heights were sometimes simultaneously made on oppo- 
site sides of a stream, owing si the different rates of flow in the 
waters along the two sides.* 
* Along the middle one of three streams entering the New Haven Bay, called 
Mill River, coarse gravel and cobble-stone deposits characterize the New Haven 
most so along a more western line away from the present stream. Moreover, the 
deposits make a terrace on t we west side of the stream of only twenty-five feet above 
mean-tide level, while on the east side, where the material is so much less coarse, 
they rise to a height of forty-three to 0 forty-five feet, or the ordinary level for the 
New Haven plain at that dista om the Sou Those coarses 8 were 
made under the sifting action of a the weber flowi wing waters Aas pitch of the 
stream for some miles back bein eight to ten feet a mile), and hence, that is, be- 
