of Inglehorough above the Level of the Sea. 433 



tion of the line of collimation from its mean value for each 

 campaign is arranged in the last column ; the bisections ben)g 

 marked D, F, or W, accordingly as they were made by the 

 dot, filament, or wire. 



^t Clougha West Pike. 



Dates. (A.) August 20, 1829, from 3 to 4 p.m. Sector 

 on board. Eye 3^ feet above the ground between the pikes. — 

 (B.) October 18, 1830, at 3 p.m. Eye 4J feet.— (C.) Sep- 

 tember 18, 1832, from 1 to 3 p.m.. Sector on a pile of stones 

 and sods. Eye 3 feet. 



Date 

 St^ference. 



Station, ^c. observed. Distance. 



I 



» { Ingleboroiigh 



f do! '.'. '.'. .. 

 C<( do, 



1^ do. [tower top -\-22-S] 

 A Hest Breakwater Pole, top 

 C do. ...... 



C Black Comb 



C FarletonKnot 



C Hiitton Roof Moor .. .. 

 C Warton Crag . . '. . . . 



A do. I 



. s Lancaster Church tower, top 



^ I do. ! 



B do. ' 



Ft. 



81522 



8*1520 



8*1343 

 35590 

 35587 

 158943 

 68036 

 59132 

 46933 

 46937 

 24558 



Angle. 



36 44 

 36 42 

 36 40 

 36 39 

 37 32 

 2 10 

 2 9 

 2 

 29 



31 



1 3 



1 4 



2 40 19 

 2 40 24 

 2 40 31 



El. 



Dp. 



El'. 

 Dp. 

 Dp. 

 Dp. 



Dp. 



Difflqf 

 Level. 



Dev. CoU. 



Ft. I 

 + 1015-0 

 + 1014.2 

 + 1012-8 

 + 1012-2 

 + 1009-0: 

 -1318-4 

 -1312-5 

 + 630-3' 

 482-2: 

 458-71 

 817-4 

 825-0 

 -1129-8 

 1 130-4 1 

 1130-2 



'F. 



At Aqueduct Bank. 

 Dates. (D.) August 21, 1829, from 4^ to 5j p.m. Eye 

 6 feet above the Lancaster Canal when full (?). — (E.) August 

 25, 1829, from 10 a.m. to noon. Eye, 6 feet. Sector on board 

 both days. 



E 



Inglehorough 1 

 do. 



do. >[+lft-] 



do. I 



do. J 

 j)|CloughaPike-j ^^^^^ 



) f' Uiketo 



J 



{ 



Ft. I 

 J310-01 

 + 2303-16-5- 

 +2306-512 

 + 2305-615 

 + 2302-5 2 

 + 1 285-6' 1 

 + 1286-l'4 

 + 1286-714-5 

 + 1286-21 



to the log. distance S P, and the sum minus radius will give a correction 

 which, added to or subtracted from the distance S O accordingly as the 

 angle S P O is obtuse or acute, will give that of P O. 



* At Inglehorough the eye must be elevated 1 foot above the base of 

 the signal to clear the view of the Aqueduct Bank. 



Third Series. Vol. 6. No. 36. June 1835. 3 K 



