Page:A Voyage to Terra Australis Volume 2.djvu/531

Observations taken at different dips of the needle in the Southern magnetic Hemisphere, from which are deduced the errors of variation at the Investigator's binnacle when the ship's head was at East or West

 

Time 1802.	Lat. S.	Lon. E.	Az. or Amp.	Comps.	Observ.[1]	Ship's Head.	Var. Obs.		Variat. supposed true.		Errors of observation.			Errˢ. at 8 points.	Dip Sᵒ.	Remarks.
April.	°  ′	°  ′					°  ′		°  ′		°  ′			°  ′	°
a.m. 10	35 48	139  3	Amp.	Nᵒ. 3	C	W. by S.	5 11	E.	1 41	E.	3 30	+	$\scriptstyle {\left.{\begin{matrix}\ \\\ \end{matrix}}\right\}\,}$	3 34	66	Encounter Bay
p.m. —	35 49	139 12	Az.	—	—	S.E.	0 50	W.	—		2 31	−
p.m. 12	36 42	139 50	—	—	—	S.S.E. ½ E.	1 25	E.	3  0		1 35	−	$\scriptstyle {\left.{\begin{matrix}\ \\\\\ \\\ \\\ \ \end{matrix}}\right\}\,}$	3 23	67	Off C. Buffon
a.m. 15	37 30	139 40	Amp.	—	—	South	4  8
a.m. 16	37 50	139 41	—	—	—	S.E. by S.	2 39		4  8	$\scriptstyle {\left.{\begin{matrix}\ \\\\\ \ \end{matrix}}\right\}\,}$	1 54	−
—	37 56	139 41	Az.	—	—	S.S.E.	2  2		—
p.m. —	37 55	139 48	—	—	—	N.Eᵗˡʸ.	2  2		—
a.m. 22	39 38	144 40	—	—	—	W.S.W.	11 52		8 30		3 22	+	$\scriptstyle {\left.{\begin{matrix}\ \\\\\ \\\ \ \end{matrix}}\right\}\,}$	3 26	68	Bass' Strait
a.m. 24	39 38	144  1	—	—	—	South	7 59
p.m. 25	38 36	144 20	—	—	—	N.E. by E. ½ E.	3 41		7 30	$\scriptstyle {\left.{\begin{matrix}\ \\\ \end{matrix}}\right\}\,}$	2 16	−
p.m. 26	38 38	144 30	Amp.	—	—	N.N.E. ½ E.	6 48		—
											Means			3 28	67
1802 Jan.	°  ′	°  ′					°  ′		°  ′		°  ′			°  ′	°
a.m. 16	34  5	123  9	Az.	Nᵒ. 3	C	W.S.W.	0 54	W.	3 30	W.	2 36	+	$\scriptstyle {\left.{\begin{matrix}\ \\\\\ \ \end{matrix}}\right\}\,}$	12 45	64	At anchor in Goose-I. Bay
1803 May. p.m. 20	34  4	123 10	—	Nᵒ. 1	—	East	6 10		—		2 40	−
1802 Feb. p.m. 15	34  5	135  9	—	—	—	S.E. by E.	1 33		1 11½	E	2 44½	−	$\scriptstyle {\left.{\begin{matrix}\ \\\ \end{matrix}}\right\}\,}$	3 18	—	Off Pᵗ Drummᵈ
—	34  6	135  9	Amp.	—	—	S.W. by W.	3 56	E.	—		2 44½	+
Mar. p.m. 16	34  7	137 19	—	—	—	S.W. by S.	4 38		2 50	E.	1 48	+	$\scriptstyle {\left.{\begin{matrix}\ \\\\\ \\\ \ \end{matrix}}\right\}\,}$	3 18	—	Off Point Pearce Spencer's G.
a.m. 17	34 16	137 16	Az.	—	F	E. by N.	0 10	W.	—		3  0	−
p.m. 17	34 22	137 21	—	—	C	S.E.	0 35		2  0		2 35	−
p.m. 18	34 42	137 14	Amp.	—	—	S.S.W.	3 15	E.	—		1 15	+
p.m. 28	34 36	138 18	—	—	—	S. by W.	5 22									At anchor, G. of St. Vincent.
a.m. 29	—	—	Az.	—	—	S.Eᵗˡʸ.	2 27		4 45		2 18	−		3 15	—
											Means			3  9	64
1802 Jan.	°  ′	°  ′					°  ′		°  ′		°  ′			°  ′	°
p.m. 19	32 40	125 25	Az.	Nᵒ. 1	C	E. by N.	7 15	W.	4 30	W.	2 45	−	$\scriptstyle {\left.{\begin{matrix}\ \\\\\ \\\ \ \end{matrix}}\right\}\,}$	2 48	62	Off South Coast
p.m. 20	32 30	125 40	—	Nᵒ. 1,2,3	C & T	South	4 26
p.m. 21	32 32	125 54	—	Nᵒ. 1	C	N.E.	6 13		4 15		1 58	−
p.m. 22	32 24	126 23	Amp.	—	—	S. by E.	4 18
a.m. 24	32  7	126 23	Az.	—	—	E. by N.	6  4		3  0		3  4	−		3  8	—	—
p.m. 25	32 17	128  2	—	Nᵒ. 1,2,3	F	S. by E.	3  8
a.m. 31	32 15	132 39	—	Nᵒ. 1	—	E. by N.	2 49		0  0		2 49	−		2 52	—	Nuyts' Archip.
Feb. a.m.  2	32 23	132 56	—	—	C	S. ½ W.	0 19	E.
											Means			2 56	62

1. In the column of observers
   C means Commander, F lieutenant Flinders, and T Mr. Thistle the master.