No. 8.] 



gannett's additional lists of elevations. 



445 



This profile of the Union Pacific Railroad was recomputed from the original notea 

 by Mr. George T. Nealley, then assistant engineer of the road, at my request. It 

 is said to be the only correct profile of the road in existence. The discrepancies, how- 

 CA'er, between this and the profile in the possession of the United States Signal Bureau 

 are very slight, which fact goes far toward proving the correctness of both of them. 



The profile, starting with my height of low water at Omaha,'' checks at Cheyenne 

 to a foot. At Ogden, where it connects with the Central Pacific Eailroad at gTade, 

 there is a discrepancy of 26 feet, the latter road being the lowest.'' I have, following 

 Mr. Gardner, <= given the Central Pacific Railroad determination a weight of 10 against 

 1 for that of the Union Pacific Railroad, giving a resulting height for Ogden (track at 

 Btation) of 4,303 feet, and leaving an error of 24 feet to be distributed over the Union 

 Pacific Railroad between Cheyenne and Ogden. 



Colorado Central Railroad. — Brancli from Hazard Junclion, Wyoming 

 ( Union Pacific Railroad), to Cache la Poudre River ^ Colorado (from Mr. 

 George T. Nealley, C. E.J 



Stations. 



Eleva- 

 tion. 



Hazard Junction, Union Pacific Railroad 



Summit .... ... 



Last crossing Lone Tree Creek 



Summit .. 



Last crossing Box Elder Creek 



Summit 



Cache la Poudre River, at Fort Collins . . 



Feet. 

 6, 320 

 6,395 

 5,985 

 6,120 

 5. 320 

 5,275 

 4,975 



Hazard Junction, given by the Union Pacific Eailroad (see p. 443), is the base. 

 There is no check. 



Georgetown, Leadville, and San Juan Railroad preliminary line (from E. 

 L. Berthoud, chief engineer J. 



Stations. 



Elevation. 



Georgetown, Colo 



Silver Plume 



Brownville 



Bakerville 



risk's Sawmill 



Loveland's Pass 



■Snake River (opposite Montezuma) 



Mouth Ten Mile Creek 



Ten Mile Pass 



Leadville 



Feet. 



8,400 



9,000 



9,077 



9, 602 



10, 800 



11,850 



9,800 



8,850 



11,300 



10, 100 



- Feet. 



8,514 



9,114 



9,191 



9,716 



10,914 



11, 964 



9,914 



8,934 



11,414 



10, 214 



Georgetown track, from the Colorado Central Railroad'^ is the datum, 

 check. 



There is no 



* Lists of Elevations, 4th ed., p. 4. 

 ^ Lists of Elevations, 4th ed., p. 48. 



• Elevations of Certain Datum Points, etc., Gardner, in Annual Report U. S. Geolog- 

 ical Survey of Territories for 1873, p. 653. 



•1 Lists of Elevations, 4th ed., p. 19. 



