1876.] 



73 



[Leslej-. 



X Shoup's Man Branch of II. §• B. T. R. R. 



Saxton (as above) 



Coiilinont 



Crawford 



Old M. P 



No. 3. Mine 



Barnet ^line 



Dudley Station. . . 



Blair's Mine 



Moredale 



Water Station. . . . 

 End of Track.... 



XL Six Mile Run Branch of II. §' B. T. R. R. 



Riddlesburg (as above) 

 ^Coal Mine. 



Coaldale 



End of 3d Mile 



End of 4th Mile 



End of Track 



XIL Sandy Run Branch of H. §• B. T. B. R. 



Hopewell (as above). 

 End of Track 



277.3 



404 



XIII. Lewisburg, Centre and Spruce Creek R. R. 



Note. — The levels on the Lewisburg Centre and Spruce Creek 11. R. were fur- 

 nished by :Mr. George \V. Leuffer, Chief Engineer. Mr. Leutfer says, " I will 

 remark that many of the Stations have, as yet, not been located. The tide 

 levels are based upon a level furnished by A. B. Starr, Esq., Engineer of P. & E. 

 R. R., of a point in abutment of Chilesquaque Bridge (of P. & E. R. R.), and this 

 agrees so closely with the level of tide, as stated in printed table of Penn.syl- 

 vania R. R. Co., of Tyrone City, tiiat I am inclined to rely upon the levels I now 

 enclose." 



The first column, then, gives the figures of Mr. Leuffer. 



The second column lias 7 feet added to Mr. Leuffer's figures, on the supposi- 

 tion that his datum is Pennsylvania R. R. datum of liigli water at the Schuyl- 

 kill Bridire. 



The third column lias 8 feet added (in addition, = 15 feet in all) to agree with 

 the final mean Atlantic Ocean level assigned to Tyrone, in the Pennsylvania 

 R. R. list, Xo. r. 



PROC. AMER. PHILOS. SOC. XVI. 97. J 



