e! 
Carll. ] 28 [May 4, 1877 
tion and 11’ too low by L. S. & M. S. levels, and here we find it 8’ too low 
by our adjustment, and 6/ if the A. & G. W. is correct—while at N. Castle 
(E) itis 7’ too high, In the first and last places the difference may be in 
a measure due to a want of unity in the points given by the several roads, 
but until we have more positive information on these points the E. & P. 
levels must be regarded as very unreliable. 
Further Checks on the A. & G. W. Railway, in Ohio : 
| Above 
| ocean. 
Ravenna Cross’g.| 522 |Above Lake Hrie by A. & G. W. profile (See Ohio. 
GeoloricalReport.pViole i pnbois ceame ienen cna 1095 
<2 o 519 |Above Lake Erie by © leveland & Pittsburgh proale 
(Authority J. Linton, Chief Engineer) . . | 1092 
, 3 |Disagreement, ; 
Newburg Cross’g.| 175 Above Lake Erie by ae & G. W. profile (IX). . .| 748 
“ a Ieee | a aide IPs Ge (Linton) . 747 
; 1 | Disagreement. 
Gallion, on bos of) G25 Above Lake Erie by A. & G. W. profile (O.R. I, p.667).) 1169 
595 (OR OBER (rad is ES (OoR* if p.668).| 1168 
1 |Disagreement. 
Urbanar. . 0. =) | 454 Above Lake Erie by A. & G.W. profile (O.R. I, p.667),) 1027 
Z 5 Gd .0 ol) SS) S.D. & C. a (O.R. I, p.671).) 1031 
4 |Disagreement, relative levels of depots unknown 
IDE hOL OS tke Mee oc 179 Above Lake Erie by A.& G. W. profile (O.R. I, p.667).| 752 
Uo o-nog ono) kell a D. & M. a (O.R. I, p.671).| 753 
1 |Disagreement. 
The Dayton & Michigan Railroad check is used by Mr. Gardner (page 
644) and accepted as reliable. 
G. 
East end of the Philadelphia and Erie Railway, compared with the 
Northern Central. 
Above 
ocean, 
1 Sop te. atepal Deeb ho cea eee een Bee UE ee Poe Oro ed. Charan Goeth oor ced 6.913 
Harrisburg... .! 318 [Above P. R. R. datum by P. R. R. profile} 
1 AdT@m i). 25 aie) Qheyslate aetiec ike Gal Sent Pe 320 
Bridgeport Cros’g| 29 iAbove Harrisburg by P.R.R. profile (Alien I).| 349 
es ss 30.25] by N. C. profile (Gardner, 
DD.W63))ieeanstetn cuore cinemoucniaee cn <lecieertan aoa - | 350 
Sha owhay Ss ARTE Si of soe Above Ocean by N. C. profile (Allen CC.) . . | 444 
Lo) ei ees 428 IRS al Dy oe (Allen CCXV). 
iy ORR | 4380 ee 2 Burgin’s “ se 
He iG} Too low on P. & E. profile. oF tesa, el Sa re 
fale! Gheiviierhaulsy be 
W’msport Juncet.|.... Above Ocean by ING: profile (Allen CCXVIL) . 540 
oe C ‘516 IPecrky. =) (Allien "C@ixeya)a 
mf “| 24 (Moo low on P. & E. profile... . 
of Depot 5.59|Below. Junction by P. & E. “profile. (Alien 
GG RV) i ascata tine serbian Renee nione eee eae 
On Northern Central bases (540-6). ....... 584 
oe os 510 Above ocean by P.& EB. profile (Allen ehh ; 
“ ee 513 by Bursings ‘ 
se os 24 Too low on P. & E. profile, ompvoken Toc tish esc wieuee 
et a 21 PBT od ngS. hae Mmecteerae rckate, eke > danas 
Elmira. o) oltte ce Wellt © nl eee PD YaNe LG. prOnlencAUlemil GC xaVeliimsc) co er eee |ielelas 
ian ae sy Sees By N. Y. & E. profile (Alien CL:XIT).-. : . ... .| 868 
‘This last check makes the Northern Central levels appear good. The 
levels of the N. Y. and Erie Railway have been brought up from Jersey 
City, about 273 miles, and those of the Northern Central from Baltimore, 
206 miles showing a disagreement of only two feet at Elmira. It seems 
quite safe, therefore to assume that the P. & E. elevations of Sunbury and 
Williamsport are altogether too low, as they have likewise been shown to 
be at Driftwood, Emporium, Irvineton, Corry, Union City and Erie. 
