28 ANNALS NEW YORK ACADEMY OF SCIENCES 



reports (24, 28), his papers and to some of the articles by 

 Hobbs (44) upon the rivers of the region. The Connecticut 



| State bulletin by Eice (259) on the geology of the State and 



1 Barrell's (258) bulletin, entitled Central Connecticut in the 



g Geological Past, are almost indispensable. 



§ 



fe Two-Days and One-Night Trips 



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5 If two entire days and the intervening night may be spent 



§ in the field, perhaps the most advantageous results of all may 



•- be obtained, especially in the matter of economy. Combina- 



■§ tions of several of the one-day trips are thus possible. 



-I Hackettstown. — For instance, the Hackettstown and Dela- 

 tes . 

 § ware Water Gap excursions may be made on successive days 



4 by spending the intervening night at Hackettstown or even 

 « at the Water Gap. 



•1 Beacon Mountain. — Another trip of the same length may 



J be outlined as follows : Leave on the Hudson River day boat, 



^ arriving at Fishkill about noon. Go upon Beacon Mountain 



5 in the afternoon, continue to Poughkeepsie, cross over to 

 | Newplatz, where the night is spent. The. next day walk over 



* Shawangunk Mountains to Rosendale, and proceed to New 

 e York by train via Kingston. The first day makes possible 

 | the observation of the entire length of the Palisades, the 

 | Croton delta, the Haverstraw delta (Fig. 6), the gorge of 

 ^ the Hudson with the remnants of the Tertiary level (Fig. 5), 

 | the three erosion cycles represented in the region, and in gen- 

 » eral the salient topographic features of southern New York. 



* The Shawangunk Mountain excursion has already been dis- 

 I cussed. For this trip, in addition to the litertaure men- 

 | tioned, the student should look over Berkey's (250) aqueduct 

 o" report and the papers by Davis. Possibly the New York 

 | State Poughkeepsie Bulletin would be useful. 



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Two-Days and Two-Nights Trips 



Catskills. — By spending two days and two nights on the 

 journey the circle of operations is still further widened. 



For instance, the party may leave by night boat for Cats- 

 kill, spend the next day studying the Little Catskill folded 

 mountains, stay over that night in Catskill village, and leave 

 the next morning for the Catskill Mountains by way of the 



