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[[image - pencil drawing showing an inlet, smaller enclosed space on bottom, opening up to a wider open space on top.  The top is marked  Ulakhta with small triangles on either side of the word.  As you move down the drawing to the bottom there is a "C" marked on left side of inlet about 1/2 way down; a "B" about 3/4 way down and an "A" at the bottom near the enclosed area of the drawing.  Spithead is marked at very bottom with a triangle on either side of the name.]]

[[key to drawing]]
Spithead to A.     94 (both wires)
A to B.           195   " [[ditto for: (both wires)]] vert. 0
B " [[ditto for: to]] C  170  lower wires
C " [[ditto for: to]] D  103  betw both " [[ditto for: wires]]
D " [[ditto for: to]] E  158  " " " [[Dittos for: betw both wires]]
[[/key]]

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Sept. 27. 1871.  Wednesday [[line]] 
Leave vessel at 8. A.M. with Mr. Harrington to measure baseline on Sand Spit.  
Plumbob of theodolite 1 ft 6 in S 57 W. from Spithead staff, centre Vert angle + 4.  B. from A
Ulakhta Δ bears (R) 1°. 21' 20"
Pulpit Δ (L)   329°. 4'  Vern A
" " " [[dittos for: Pulpit Δ (L)]]   150.56 " [[ditto for: Vern]]  B
Round Top Δ " [[ditto for: (L)]]   231.50 " [[ditto for: Vern]]  A
" " " [[dittos for: Round Top]] 48.10 " [[ditto for: Vern]] B
A. on W side of bank of spit
[[line]]

C from B Δ Ulakhta not visible from high pass, sight back & reverse
Vern  A            Vern B
228° 20' 20"      48°. 20.'40"
Rains hard.  Pulpit Rock bears N. 34 W.
D from C   103.    Pulpit Rk N 53 W vert 0.. W side of spit on bank.
E from D. E side of spit "  " [[dittos for: on bank]]
Pulpit N. 60 W.   2nd Bay N Hd N. 41 E.