244 Facts relating to Diluvial Action, 
bottoms of cellars, of excavations made in digging wells, and where 
the earth has been removed by making roads, and in many instances 
where I have uncovered the solid rock for the purpose of observing 
the effects of the diluvial action. I have paid some attention to this 
subject while travelling in the Eastern States, and I could find none 
of the furrows ;* but the solid strata appears to be worn very smooth 
by attrition, by the motion of some bodies smaller and less solid than 
those which have produced the distinct traces, in this part of the State 
of New York. . ‘ i es 
~ It may be proper to remark first, that Sullivan County is bound- 
ed south and west by the Delaware river; north’ by Delaware 
and Ulster Counties, and east by Orange: that the county lies on 
the easterly part of the Alleghany range of mountains, and that the 
mean altitude of the county, is on a level with the highlands be- 
low Newburgh,—about one thousand five hundred feet above the 
tide water; that this level is continued westerly through Sullivan 
County and the siate of Pennsylvania, from the Shongham moun- 
tain to the Susquehannah River; that a space of above fifty miles 
wide of this level lies continuously, in the Alleghany range, until you ~ 
come to mountains of a greater height, on the west side of the Sus- 
quehannah ; that the depth of the earth above the solid rock, gradu- 
ally and regularly increases from Shongham mountain to the Susque- 
hannah ; that the average depth of earth in Sullivan County is not 
more than twenty five feet, nor more than thirty five through the 
state of Pennsylvania: that the range of the Kattskill mountain, 
bounds the north part of Sullivan; that south of this space of fift i 
miles, the altitude of the mountains considerably increases; in this 
intermediate sp2ce it appears that tops of the ridges had been dilapi-_ 
dated by mighty force, and that the current had pressed easterlys, 
and often times carried large pieces of rock to a considerable dis- 
tance, say from fifty to two hundred rods, and if the fragments are 
of very considerable size they always rest on the solid strata. - In 
ny instances, sections of the strata were broken out and raised 
violence of the current and left. on the tops of the highest 
MH 3 [have seen an instance where a rock twenty feet square has 
been carried half = mile on the level surface of the strata that are 
covered about three feet with earth, and there left in that positions 
* The author will find notices of such appearances in’ Massachusetts by Mr. 
pleton, Vol. XL. p. 100 of this Journal. ~ {a ee as Sea 
