646 GEOLOGICAL SURVEY OF THE TEERITORIES. 



ELEVATION OF THE SAINT LOUIS DIEECTEIS. 



Feet. 



Various datum-planes. 



=M CO fl 



a as 



.2 « o d 



"§ o g « 



First determination. 



Indianapolis union depot track : . . 



Terre Haute, by T. H. and Ind. E. K . . . 



Terre Haute, T. H. & Ind. depot 



Terre Haute, H. W. in Wabash Eiver 



Do 



Terre Haute, river-bed "Wabash River 



Do 



Terre Haute, ordinary water Wabash Eiver. . . 

 Saint Louis directrix, by St. L. V. & T. H. K. E. 

 Saint Louis directrix 



19.3 



'ho'. 8 



71.60 



Second determination. 



Indianapolis union depot 



Vincennes, by Ind. & V. E. E 



Vincennes 



Saint Louis directrix, by C. & V. and St. L. & S. E. 



E.Es. 

 Saint Louis directrix 



287. 36 



3.60 



Third determination. 



Cincinnati directrix 



Present depot of O. & M. E. E., by city-engineer 



Vincennes, by O. & M. E. E. report in 1857 



(It is not known whether the present depot is referred 

 to in this old profile. If not the present one, it is 

 probably the one at the north edge of the city, 

 which is a few feet higher. Assuming it to be the 

 same depot as at poesent :) 



Vincennes 



(On account of the uncertainty above mentioned, this 

 result is not used, but merely introduced to show 

 how small the probable error is of the elevations of 

 Indianapolis, and Vincennes as determined through 

 Indianapolis.) 



Fourth determination. 



Chicago directrix , 



Effingham, by HI. Cent. E. E., (Chicago branch,) re- 

 ported to me by chief engineer, October, 1873. 



Saint Louis directrix, by St. L. V. & T. H. E. E 



Saint Louis directrix 



54.94 

 68.00 



Below union depot Indian- 

 apolis. 



Below depot . 

 Below depot , 



721. 75 

 504. 75 



485. 45 



Below Terre Haute depot. 



453. 95 

 467. 45 



Below Indianapolis union 

 depot. 



Below Vincennes 



433. 15 



721. 75 

 434. 39 



Above city-directrix 



Below O. & M. Cincinnati 

 depot. 



Fifth determ,ination. 



Chicago directrix 



Mendota, (111. C. E. E. crossing,) by C. B. & Q. E. E. . . 

 Vandalia, (exact crossing of St. L. V. & T. H. E. E.,) 

 byIlI.C.E.E. 



Saint Louis directrix, by St. L. V. & T. H. E. E 



Saint Louis directrix 



Sixth determination. 



H. W. 1858, Columbus, Ky., by N. 0. J. &Gt. N., M. C, 

 M. & T., M. & L., N. & N. W. E. Es. to Hickman, 

 thence fourteen miles by river-slope. ■ 



H. W. 1844, probably 



Saint Louis directrix, by St. L. & I. M. E. E 



(Belmont depot is certainly not below H. W. at Co- 

 lumbus, on the opposite side of the Mississippi 

 Eiver :) 



Hence by this route the Saint Louis directrix could 

 not be less than. 



Seventh determination. 



Memphis, H. W., city-base + 100 feet 



Argenta, (opposite Little Eock,) by M. & L. E. E. E. . . 



10. 50 

 170. 80 



169. 07 

 249. 00 



320. 01 



319. 11 

 100.3 



Above Chicago directrix. 

 Below Effingham 



430. 79 



339. 74 



326. 68 



Above Chicago directrix. 

 Below Mendota 



Below Vandalia. 



, Above M. T. New Orleans. 



-do 



Above end of track at 

 Belmont. 



426. 85 



587. 15 



423. 62 



419. 41 



218. 65 

 86.00 



Above M. T. New Orleans. 

 Above city-datum + 100 

 feet. 



