TOPOGRAPHY. G 5 . 17 



car track returns across the same mountain reaching the sum- 

 mit (1906'.52 A. T. at head of Plane 20, which is 41' lower 

 than the summit (1947'. 17) on the loaded track at head of 

 Plane 8. 



The end of the 20th Level is at Archbald in the Lacka- 

 wanna valley. Plane 23 is at Olyphant ; Planes 22 and 24 

 at Peckville ; Planes 25, 26, & 27*at Archbald ; Plane 28 at 

 Carbondale. 



From Rix 1 s gap northward, the Moosic range varies from 

 2000-2200' in height until we come to Gris wold' s gap, oppo- 

 site the southeast corner of Susquehanna county, Avhere it 

 is cut down to 1950' (barometer). Going still northward 

 from this it rises higher again and continues at an elevation 

 of 2050-2100' to beyond Mt. Pleasant, just north from which 

 however it begins to get more elevated, and finally culmi- 

 nates in the lofty Ararat peak, whose summit I determined 

 by barometer at 2650' above tide, the second highest eleva- 

 tion in northeast Pennsylvania. 



A low valley of erosion intervenes just north from Ararat 

 and then the Moosic range apparently ends with Sugar Loaf 

 peak whose summit, (by barometer) is 2475' A. T. North 

 from this the general level of the divide is about 2000', and 

 it continues in a very sinuous course northward between 

 the Delaware and Susquehanna rivers. 



Rivers and Creeks. 



Two great divides, one North and South, the other East 

 and West, not only separate the drainage of the district into 

 two systems, one belonging to the Delaware water tree, and 

 the other to that of the Susquehanna ; but also subdivide 

 the latter into two subordinate water basins, one debouch- 

 ing northward, the other southward. 



The Starr acca, Canawacta, Drinker' 's, Mitchell 's, Salt 

 Lick and Wiley creeks empty northwards into the Susque- 

 hanna within the State ; Snake, Choconut and Apolacon 

 creeks, not until they have entered New York State. 



The streams which drain the southern slope of the east 

 and west divide into the Susquehanna, are the following, 

 beginning at the east : 

 2G\ 



