226 report— 1877. 



Extract from Tracings of Original Levelling Sheet 29 (1843-44) supplied 

 Ordnance Department to Borough Engineer of Liverpool. 



feet 

 At Old-Dock Sill gauge, S.E. corner of Canning Dock ... 178 ( bottom, of 22nd 



[ figure on gauge. 



„ ,, „ 19'8 top of coping. 



Copy of Results of Check-levels taken by Mr. G. F. Deacon, C.E., Liverpool. 



Municipal Offices, Dale Street, 

 Borough Engineer's Department (entrance Crosshall Street), 

 Liverpool, 28 Aug., 1876. 



Ordnance Datum and 0. D. Sill. 



Dear Sie, — I am instructed by the Boro' Engineer to forward you the en- 

 closed copy of the relative level of the Ordnance Datum and the Old Dock 

 Sill on Canning Island. 



I am, dear Sir, 

 J. N. Shoolbred, Esq., Yours obediently, 



Westminster Chambers, London. (Signed) John M. Sadler. 



Relative Level of Ordnance Datum and Old Dock sill transferred to river-face 



from Canning Island, marked 



Tidal Datum as transferred in 1843 from Old Dock Sill. 



C VidoriaXck b0lt ° n faC6 ° f riVer " Wan ° Pp0Site } S above Ordnance datum. 

 Fall to Old Dock sill" at Canning island .'..'.'.'.'.'...'..... 2242 



4'67 under 



Ordnance B.M..N.W. corner of St. Nicholas Church- 1 n . .- , 



yard J 2440 above 



Fall to Old Dock sill at Canning Island 2905 



4 - 65 under 



Ordnance B.M. on house, Strand Street, comer of j 22 . QQ &h 0rdnauce datum . 



James street j 



Fall to Old Dock sill at Canning Island 27 "57 



467 under „ „ 



Ordnance B.M., N.W. corner of Custom House 2284 above Ordnance datum. 



Fall to Old Dock sill at Canning Island 27 50 



466 under „ ,, 



Ordnance B.M., S.W. corner of Custom House 2276 above Ordnance datum. 



Fall to Old Dock sill at Canning Island 27"36 



4 60 under ,, „ 



This B.M. sunk -05 



465 under „ „ 



Mean level of Old Dock sill 4'66, say 4 feet 8 inche?, under Ordnance datum. 



Borough Engineer's Department, 

 Municipal Offices, Liverpool, 28 Aug., 1876. 





