Volume I Part 25 (1/2)
The fourth (interval of days) is the elapsed time between the last day at the first station and first day at the second.
The seventh (meridian distance in arc) is the result of the particular measurement specified between the two places named.
The eighth (mean meridian distance from Sydney) is that deduced by a mean value of two or more distances by the same T.K.'s, and in some instances of ONE ONLY, in some of the princ.i.p.al stations connected with the survey.
The times throughout these abstracts have been determined by equal alt.i.tudes of the sun, excepting in those instances where the contrary is specified by A.A. The interpolations in the Rattlesnake's distances have been calculated by Owen's method: those of the Bramble by a method of Lieutenant Yule's.
In the Rattlesnake's distances interpolation has been employed throughout; in the Bramble's only where an intermediate distance is measured between two rates.
The asterisks point out the place to which the mean meridian from Sydney refers.
ABSTRACTS OF MERIDIAN DISTANCES MEASURED IN H.M. SURVEYING s.h.i.+P RATTLESNAKE, BY CAPTAIN OWEN STANLEY, R.N., F.R.S.
COLUMN 1: YEAR.
COLUMN 2: PLACES MEASURED BETWEEN.
COLUMN 3: NUMBER OF T.K.'S USED.
COLUMN 4: INTERVAL IN DAYS.
COLUMN 5: EX. DIFFERENCE OF RESULTS IN SECONDS OF TIME.
COLUMN 6: RANGE OF TEMPERATURE.
COLUMN 7: MERIDIAN DISTANCE IN ARC IN DEGREES, MINUTES AND SECONDS.
COLUMN 8: MEAN MERIDIAN DISTANCE FROM FORT MACQUARIE, SYDNEY IN DEGREES, MINUTES AND SECONDS.
COLUMN 9: SPOT OF OBSERVATION.
COLUMN 10: LAt.i.tUDE OF SPOT OF OBSERVATION IN DEGREES, MINUTES AND SECONDS.
COLUMN 11: REMARKS.
1846 : Greenwich and Madeira : 14 : 10 : 7.7 : - : 16 53 22 W : - : Mr.
Veitch's Garden, Funchal : 32 37 42 N : 16 53 22 West of Greenwich : -.
1847 : Madeira and Rat Island Rio de Janeiro : 12 : 31 : 31.6 : - : 26 14 38 W : - : Rat Island Rio de Janeiro : 22 53 30 S : 43 8 0 West of Greenwich : -.
1847 : Rat Island Rio de Janeiro and Simon's Bay : 12 : 36 : 50 : - : 61 32 52 E : - : North-west end of Dockyard, Simon's Bay : 34 11 28 S : - : -.
1847 : Simon's Bay and Mauritius Island : 13 : 28 : 20 : - : 39 1 6 E : - : West side of Tonnelier's Island : - : - : -.
1847 : Mauritius Island and Hobart, Van Diemen's Land : 14 : 40 : 40 : - : 89 45 43 E : - : Ross Bank Observatory : 42 52 10 S : - : AA.
1847 : Hobart and Sydney : 11 : 11 : 5 : - : 3 52 39 E : - : Fort Macquarie : 33 51 33 S : - : AA.
1847 : Sydney and *Parramatta : 10 : 1 : 0.6 : - : 0 13 13 W : *0 13 13 W : Parramatta Observatory : 33 48 50 S : *By the Bramble's T.K.'s : -.
1847 : Sydney and *Twofold Bay : 9 : 3.5 : 3 : - : 1 17 53 W : *1 17 53 W : Jetty at Eden, Twofold Bay : 37 4 20 S : *By the Bramble's T.K.'s mean of 2 measurements : AA.
1847 : Twofold Bay and *Gabo Island : 8 : 5 : 2.1 : - : 0 00 37 W : *1 18 35 W : Landing-place on West side : 37 34 0 S : *By the Bramble's T.K.'s mean of 2 measurements : AA.