690 NEW YOKK STATE MUSEUM 



These measurements apply, of course, to tlie upper terrace, 

 ■which, can be traced along many portions of the river,-^ 



An examination of the above figures and the distances between 

 the points mentioned indicates an interesting fact. Between l^ew 

 York and Peekskill, a distance of 45 miles, the terrace rises 40 

 feet, or eight ninths of a foot a mile. Erom Peekskill to West- 

 point the rise is eight feet a mile. From Westpoint to ISTew- 

 burgh the terraces ascend 2^ feet, and from Newburgh to Albany 

 about five twelfths of a foot a mile. From the above it would 

 seem that the uplift from 'New York to Albany did not increase 

 uniformly, but was slightly greater along the axis of the Highlands. 

 To determine this point definitely requires a large number of accur- 

 ate terrace measurements. The following are the number of ter- 

 races noticed at the different localities. 



Athens 2 



Port Ewen 2 



Cornwall , 2 



Haverstraw 2 



Stonypoint 3 



Peekskill . . . 1^ 



Fishkill 2 



Stormking ,...., 2 



Schodack .' 2 



The shore line of the upper terrace is generally some distance 

 back from the river. In fact, as we go up the river, specially 

 above Port Ewen, the shore line recedes. At Port Ewen the ter- 

 race is 20Y feet above tide, but it is fully 225 feet at the base of 

 Hussey mountain, which was an island in the estuary. The terrace 

 extends up the Wallkill valley several miles.^ It seems not im- 

 probable that a shore line of this Quaternary deposit will be found 

 along the base of the Catskill mountains, or not far from there. 



1 For detailed statement of terrace altitudes, see H. Eies. Trans. N. Y. acad. 

 sci. Nov. 1891. 



2 There is possibly a second lower terrace at Peekskill. 

 3 Mather. Geol. New York, 1st dist. 1843. p. 131. 



