Carll. ] 24 [May 4, 
burgh to the Lake by raising the O. C. & A. R. and Union & Titusville 
Railways 18 feet and the P. & E. Railway 11 feet and by throwing off all 
the decimals on the Allegheny slope and making the most of them on the 
Lake slope. But even by doing this there is still an error of one foot to be 
accounted for at Union City which is referred to more fully in remarks 
following determination C. 
Mr. Gardner in summing up his conclusions on the elevation of Pitts- 
burgh says he is inclined to accept 746 in preference to 745 for the elevation 
of the Union Depot. But the levels of the Railroads leading to the Lake 
through this district conform better to the height we have adopted, 745, and 
might even seem to suggest a lower level for Pittsburgh. 
C. 
Oil City to Lake Erie, by the Oil Creek and Allegheny River Railway 
to Irvineton and the P. & E. Railway from Irvineton to the Lake—using 
Burgin’s profile of the P. & E. Railway. 
| ] Above 
| | | ocean. 
| | 
Oil City itAccepted- elevation: <i.) lm ye, ee ctecals we rere 1008 
Irvineton Bridge...| 165 |Above Oil City by 0. C. & A. R, Pte ee We es || Lae 
M2 eral L625) ‘* ocean by P.& E. (V TD). 
© See eho PLLGOM ee sf “O.C.&A. R. se (VI) 
sf OP arn ll |Too low on P.& E, iy Gor dars: ¢ 
nf Ce tases 13 cS OMOua Ac UR. SS 8 Say 
Corry Crossing 
A. & GW. &P. & H.| 254 |Above Irvineton by P. & EK. profile (VIII). .| 1427 
ec se 1416 oe ocean Lay “ec “ee ay | 
as " 1429| « He AG Gs Wao) iy ix): cael 
fs ee 1418 | se Oe ORC ace ARs: COVGI) Feces 
tt a ean ‘Too low on P. & E. Poe nak we hs 
. us 9 | es RONG G GecA: ait ce Laem cate 
26 os 2 |Too high on A. & G. W. Oo eg gtapecataaes 
A. & G. W. Depot | 
Union City 128 [Below Corry by A. & G. W. profile (IX) oLontre oi lth) 
cf ub TSOL WAM OVETOCEATISS Pe OTS tele aa ie inet ieee eae | 
ae es 2 |Too high on fe oe AC ee ha he O 
P. & E. Depot | ; 
Union City. . ... ./ 29.22 |Below A. & W. Depot, Union City ee seit | 127 
te 2h Mee eA!) Vf ‘““ Corry crossing by P. & E. profile ( Viti | 1270 
- Sadie ovo) io) fo atl 2 AD OMENO CCCI gig me tee ieee eee | 
- SPN Moersycce me 11 Too low on oe ee pi anes €: 
L.S.& M.S. &P. & E.| 
rie Crossing. 583 Below Union City by P. & E. profile (VIII). . .| 687 
oe ie 583 | Ee 1Garllsievelsiae 6S 
“ ef 114 | Above Lake Erie by L. 8S. & M.S. profile & Carll i 
a ©. 2! eee ein Pe ea ee mbar hes tarot al We 687 
a UG 676 |Above ocean by P. & E. profile.......... 
e ns EG woulOw Ons ot 2° TSS Be WS yee ere ee ce cane | 
Lake Erie......./ 114 |BelowP. &E.&L.8.&M.S. crossing as above.| 573 
The levels of the Dunkirk Allegheny Valley and Pittsburgh R. R. touch- 
ing the P. & E. at Irvineton, are so widely astray and evidently unreliable 
as heretofore published that we can make no use of them in this connection 
to reach the Lake. A trip to Dunkirk expressly for the purpose of examin- 
ing the profiles with a view of including the levels of the road in this dis- 
cussion resulted unsuccessfully, for the want of a permit from headquarters 
in New York and we are obliged to omit them altogether. 
So too, unfortunately with the Buffalo Corry & Pittsburgh Railway 
