382 G. H. Stone—Terminal Moraines in Maine. 
extend eastward across the valley and climb the slopes of the 
hill beyond. They show several short, gentle zig-zags but 
their genera] course across the valley is curved, the concave 
side being to the north. They are nearly parallel and only a 
few rods apart. The more northern of these moraines is rather 
discontinuous, consisting of a well-defined system of ridges 
separated by low places in the ridge or by short gaps. The 
mills and the dam are built on the line of this moraine. It is 
composed of a somewhat sandy till, pell-mell in structure gen-_ 
erally, but in places faintly stratified and partially water- 
washed, a sort of transition into kame sand and gravel. The 
more southern of the two long moraines is higher and more 
continuous than the northern one. It rises from ten to twenty 
feet above the marine clay of the valley and has been cut 
through by the railroad to a depth of about fifteen feet. It is 
composed of till which contains much fine clay and shows few 
or no signs of water-wash, and it affords a much larger propor- 
tion of well-scratched stones than do the surface layers of the 
ordinary till of that locality. A few rods east of the mills is 
a pit whence much rounded gravel has been taken. The exca- 
vation shows the till of the terminal moraine overlying the 
gravel and rounded cobbles. This gravel is part of a system 
of glacial or ‘“‘ kame” gravels which extends from Waldoboro 
about five miles northward, most of the way lying near the 
Medomac. It is one of the discontinuous systems of kames 
characteristic of that part of Maine—consisting of short ridges 
like kames yet arranged in long north and south lines like 
osars. The domes or ridges are separated by gaps of from a 
few rods up to one-fourth of a mile or more. Of course that 
part of this kame systern which is south of the terminal mo- 
raines must have been deposited before the recession of the ice 
northward to Winslow’s Mills. Even to the north of this place 
the main line of kames does not show an immediate change of 
character and it too was probably formed before the recession 
of the ice and deposition of the moraines. But east of the 
main system of kames and north of the moraines are a number 
of low scattered kame hummocks and short ridges somewhat 
parallel to the terminal moraines and probably contemporane- 
ous with them, at least with a part of them. 
I looked with especial care for exposures showing the rela- 
tive positions of the moraines and the marine clay. The Cham- 
plain clay is much thinner in this valley than in that of the 
Kennebec. Many of the kame ridges along the Medomac 
are plainly overlaid by the clay, but no fresh exposure could 
be found showing the relations of the moraines to the clay. 
The surface indications were that the clay overlies the base of . 
the moraines. My exploration was incidental to other work 
and did not permit excavation. 
