Davis and Wood.] 
366 
[Nov. 20, 
25. Revived streams : the Musconetcong. 
26. Superimposed streams : the North Branch of the Raritan. 
27. Distribution of revived and inherited streams in the Highlands. 
28. Drainage of the Triassic area of the Central Plain. 
29. Drainage of the Watchung crescent. 
30. Drainage of the Uinta mountains of Utah. 
31. The Kittatinny Yalley. 
The Millstone deformation of the Central Plain. 
32. Present attitude of the Central Plain. 
33. Valleys of the Millstone cycle. 
34. Persistent and reversed streams of the Millstone cycle. 
35. Reversal of the Millstone river. 
36. Deflection of the Delaware along the Pall-line displacement. 
37. Shifting of divides in the Millstone cycle, 
38. Marine erosion of the Central plain in the Millstone cycle. 
39. The southern Lowland plains. 
40. Effect of the glacial invasion. 
41. Review. 
Preface. 
1. The following essay had its beginning in work by the au- 
thors as teacher and student in a second course in physical geog- 
raphy at Harvard College in 1887-88. The home of the student 
being in New Jerse3 ? , the physical geography of that state was 
taken as our theme ; and with the reports and admirable contoured 
maps published by the State Geological Survey in hand, the sub- 
ject was investigated with such methods as could be devised. An ex- 
cursion across northern New Jersey in the spring of 1888 gave us 
a brief view of the typical areas described below. At about the 
same time the publication of the first number of Mr. McGee’s es- 
say on “Three Formations of the Middle Atlantic Slope” gave us 
the results of his observations over an extended area, with which 
we were already in substantial accord as far as the topography of 
New Jersey is concerned. The investigation proved instructive 
and entertaining beyond our expectations, and foreshadowed the 
impulse that will be given to geographical study when all our states 
shall be well surveyed. 
The completion of our manuscript having been much delayed, it 
has been extended from time to time by the senior author beyond 
its original form. Use has thus been made of the five-mile relief map 
of New Jersey, published in the summer of 1888 ; of the later ar- 
ticles by Mr. McGee ; of his account of the fall-line displacement, 
