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[[left margin vertical]] See Journal (Log) July 23/62) [[/left margin vertical]] [[underlined]] Explanation [[/underlined]] of the "Working up" ^[[(on the page preceding this)]] of obs. July 23 1862 for Variation as entered on this page ^[[ [[encircled]] A [[/encircled]] ]] of my journal when as my Voyage of 1860 - 1 & 2. [[strikethrough]] I [[/strikethrough]] ^[[I]] was then unacquainted ^[[with]] [[strikethrough]] of [[/strikethrough]] the proper rule for [[strikethrough]] not [[/strikethrough]] reducing the angular distances bt. Sun [[encircled sun symbol]] & object to the arc of the horizon. On returning to the States I found Rule & Example in "Roper's [[strikethrough]] Nautical A [[/strikethrough]] Navigation", ps. 314 [[strikethrough]] [[?]] [[/strikethrough]] & 315 My way as seen enclosed in Red line on this page is wrong if Roper be right. [[right margin vertical]] [[signature]] C F Hall [[/signature]] Aug 24/63 The Mean of 3 sets gives result of Compass Variation on the "S.E. Ex" N 68[[degree symbol]] - 24[[symbol]] W. over 6[[degree symbol]] more than I expected [[/right margin vertical]] Azimuth of [[sun symbol]] [[strikethrough]] as [[/strikethrough]] resulting from obs. & [[?]] "working up" = N. 118[[degree symbol]] - 35[[symbol]] W Corrected Angular distance [[sun symbol]] to Rt. to Tarrioarctune - 93 - 28 [[Note: arrow from last number with dots pointing to same number at end of page]] [[line]] Tarrioarctune's [[underlined]] true [[/underlined]] bearing - - - N. 25 - 7 W I draft up the large " [[ditto for: Tarrioarctune's]] [[underlined]] Compass [[/underlined]] " [[ditto for: bearing]] - - - - N 43 - 30 E [[line]] [[underlined]] Variation of Compass N 68[[degree symbol]] - 37[[symbol]] W. [[/underlined]] Variation of Compass N. 68[[degree symbol]] - 37[[symbol]] W. was due to Cold attraction Hall [[encircled]] 2 [[/encircled]] Observed angular distance bet [[sun symbol]] & Tarrioarctune Mean of 3 obs. 92[[degree symbol]] - 48[[symbol]].5 - Cos. 8.69015 Alt. [[sun symbol]] - - - 35 - 57 - Sec. .09181 [[line]] Cor. Avg. Dist - 93[[degree symbol]] - 28[[symbol]] [[Note: arrow from last number with dots connecting same number earlier on page]] = Cos 8.78196 [[boxed]] Compass bearing of Tarrioarctune 316[[degree symbol]] - 30[[symbol]] 360 [[line]] N 43[[degree symbol]] - 30 [[?]] [[/boxed]]