Page:A Voyage to Terra Australis Volume 1.djvu/490

 

TABLE III. (Reference from p. 105.)

Longitude of the Anchorage in Fowler's Bay.

Appt. Greenwich time of the observations.		Place.	Longit. E. from Naut. Alm.			Reduction by two time keepers.			East Longit. of the Anchorage.			Correction			Corr. Longit. of the Anchorage.			Whence deduced.	Observer.
												for errors in tables		Interv. of ☾'s error.
			°	′	″	°	′	″	°	′	″	'	″		°	′	″
1802 Jan. ʰ    ′ 9 at 17 56	$\scriptstyle {\left\{{\begin{matrix}\ \\\\\ \\\ \\\ \ \end{matrix}}\right.}$	On shore at Lucky Bay. — — —	122 122 122 122 122 122	30 29 33 34 38 41	45 30 15 45 45 15	+10	13 — — — — —	38	132 132 132 132 132 132	44 43 46 48 52 54	23  8 53 23 23 53	− 6 — — — — —	15	One day — — — — —	132 132 132 132 132 132	38 36 40 42 46 48	8 53 38  8  8 38	ʘ W. ☾ — — — — —	C — — — — —
27 at 13 28	$\scriptstyle {\left\{{\begin{matrix}\ \\\\\ \\\ \\\ \ \end{matrix}}\right.}$	At sea. — — — — —	132 131 131 131 131 131	0 51 51 47 50 52	45 15  0  0 15 45	+ 0	42 — — — — —	43	132 132 132 132 132 132	43 33 33 29 32 35	28 58 43 43 58 28	− 8 — — — — —	45	As on 27th there being no other obs. until Feb 5. —	132 132 132 132 132 132	34 25 24 20 24 26	43 13 58 58 13 43	ʘ E. ☾ — — — — —	C — — — — —
28 at 14 42	$\scriptstyle {\left\{{\begin{matrix}\ \\\\\ \ \end{matrix}}\right.}$	On shore at Fowler's Bay. —	132 132 132 132	30 24 19 19	45 30 30 15				132 132 132 132	30 40 38  5	7 52 52 37	− 8 — — —	30	Ditto. — — —	132 132 132 132	22 16 11 10	15  0  0 45	Ditto. — — —	F — — —
February ʰ    ′ 15 at 1 26	$\scriptstyle {\left\{{\begin{matrix}\ \\\\\ \\\ \\\ \ \end{matrix}}\right.}$	At sea. — — — — —	135 135 135 135 135 135	8 18 16 44 31 21	0 15 30 15 15 30	− 2	37 — — — — —	43	132 132 132 132 132 132	30 40 38  6 53 43	17 32 47 32 32 47	−19 — — −19 — —	45     15	Two days — — — — —	132 132 132 132 132 132	10 20 19 47 34 24	32 47  2 17 17 32	* Aldeb. W. ☾ — * Sp. Virg. E. ☾ —	C — — — — —
Longitude from twenty-two sets of lunar distances,				$\scriptstyle {\left.{\begin{matrix}\ \\\ \end{matrix}}\right\}\,}$	Uncorrected				132	39	24	Corrected			132	28	26,7

 

Longitude of the Anchorage from the two time keepers.
On Jan. 28 at 11ʰ 14′ of Greenwich time, and using the King-George's-Sound rates, the mean longitude was	132°	32′	37″
Correction for variation in the rates found at Pt. Lincoln,		−3	34,4
Correction for supplemental error during 27,8 days,		−3	36,8
Corrected longitude, taken preferably to that above,	132	25	25,8	east.