LOBECK, NEW YORK CITY, A PHYSIOGRAPHIC (ENTER 



29 



inclined railway, arriving in New York the same night. To the topics 

 previously mentioned there is added the opportunity to study a splendid 

 case of stream capture as well as to see the big features of the maturely 

 dissected Catskill plateau, and to have an inspiring view over the adja- 

 cent lower country. The additional literature would include a paper by 

 Darton (79) on stream capture and several articles by Rich (90, 91), 

 who has devoted considerable attention to the Catskill region, as well as 

 to papers by Heilprin (86) and Guyot (85). 



Harrisburg and Altoona. — Again, by leaving New York late in the 

 afternoon the student may reach Harrisburg that evening, and the next 

 morning go by trolley toward Marysville (Fig. 19). He may then walk 

 through the water gap of the Susquehanna Eiver and see some of the 

 great pitching folds of the Appalachians, continuing by train to Tyrone 

 or Altoona for the night. The next morning he may go upon the Alle- 



Part oP Presidential Panae 

 from Mt. /fear^arae oP the North 



(Field sketch) * 



Mt Washington m j eP f er ^ on 



Fig. 25. — The cirques on the east side of Mt. Washington in the White Mountains 



gheny Front (Fig. 22) and possibly spend the day walking back along 

 the railroad around Horseshoe Curve, returning to New York that eve- 

 ning. Such a trip gives a good cross-sectional view of the Appalachian 

 folds whose historical development, comprising the three cycles of erosion, 

 is worthy of careful study. Davis' (119) paper on the rivers of Pennsyl- 

 vania should in spite of its close reading and strenuous logic have been 

 carefully studied. The very valuable monograph and annual report by 

 Willis (124, 125) upon the mechanism of Appalachian structure, papers 

 by Chamberlin (116) and Campbell (78), and the very easily understood 

 articles by Tower (98) on topography and travel in Pennsylvania, as 

 well as one by Brigham (115), all contribute to an understanding of the 

 region, and finally there is that little manual of Lesley (120) which, 

 although published in 1856, is still highly suggestive. 



Three-Days axd Two-Nights Trips 



Lake George. — Other slightly longer week-end trips may be made to 

 consume three days and two nights, three days and three nights, or even 

 three days and four nights. 



