Ph'istoceiie ('/umg<'s of [j/'vel. — Di'di'er. 31 
At Nftw York SO feet, 
^foiitii of ( 'fotoii Itiver 100 " 
ret'kskill Jl'O 
AVest T'oint J SO 
Fishkill L'lO 
Scll(Ml('('l;l(lv o40 *■ 
As soiiu' of tlie iihove tii>-ur('.s seem dillieiilt to reconcile, luid as 
the mtuiue origin of several of tli(^ deposits seems also (juestiou- 
able. 1 have thought it useful to make another series of observa- 
tions, and have employed the same methods which 1 used in 
Scandinavia. 
F<rfh Aii,l>,>,i. 
During u short visit made in (•onn)auy with professor Smock to 
Perth Aml)oy. southwest of N«'W York city, just where the great 
terminal moraine reaches its .southernmost [)oint in this tract, J 
could not tiud on the surface of the moraine any traces of marine 
erosion above the well develo[>e(l terr;u-e at the present sea-level. 
\('ir Iliin II. 
At New Haven T luid ;in opportunity, during an excursion with 
Prof. J. 1). Dana, to see the lowest of the late glacial river- ter7 
races or Hood-plains so admirably described by him. with their 
remarkably well preserved ketth' hohts, but without any trac(!S of 
former sliore-lines. At the same time I visited the present sea- 
shore at West Haven in company witli Mr. H. Lundbohm. The 
even flood-phiiu desc*'nds with ii continuous sloiu- to th<' very edge 
of the actual shoi'e-terrace or to a level about 17 feet above 
highvvater mark. On the surface of this ternict' thiu'e lies ex- 
posed in the clitl' :in earthy l)ed one or two feet in thickness, con- 
taining shells of oysters and 1V////.S nirrrritinin which no doubt 
formed an Indian kitchenmichling and show that since its forma- 
tion the terrtu-e has i»een cut itack. 'i'he foot of the clitf lies 
about three feet above what I assumed t<» be the ordiuaiy higli- 
water mark and evidently represents tin- actual storm-level. 
These facts seem to lie in :iccor(hinec with the assumption tliat 
this coast is slowly sinking, and I failed to find any proofs that 
since the Ice age the land was ever more deeply subnuu'ged than 
it is now. As the original land surface here is cut away by tlie 
recent wave-action, this locality does not prove anything for 
levels lower than 17 feet. Thus, though it cannot be denied that 
