202 
PBOCEEDINGS OF SECTION A. 
sent by the Boundary Observatory to be lost in Sydney. [See (17).] 
This interval, Sydney-Boundary, is deduced from observations of six 
stars on May 9, and four stars on May 10. The interval, Melbourne- 
Boundary, depends on the observations of nine stars on May 13, and 
twelve stars on May 14 ; the circuit in this case being excellent on 
both nights. 
The mean errors, computed from the agreement of the observations, 
give weights nearly equivalent to those assigned by Mr. Todd. 
The intervals Sydney to Boundary Pier and Melbourne to Boundary 
Pier, combined with the adopted longitudes of Sydney and Melbourne, 
and with the measured distances of the two boundary lines from Mr. 
Todd’s station, will give the longitudes of these lines, thus — 
Via Sydney. 
Longitude of Sydney Observatory ... (XIII.) 
Interval Sydney to Boundary Pier ., . (A 1 .) 
Longitude of Boundary Pier ... ... (XVI/ 
Distance from Pier to Marked Boundary 
of South Australia and New South 
Wales 
Longitude of the Boundary between (XVII 
South Australia and N. S. Wales 
Longitude of Boundary Pier ... ... (XVI. 
Distance from Pier to Marked Boundary 
of South Australia and Victoria 
Longitude of the north end of the (XVIII 
common Boundary of South Aus- 
tralia and Victoria 
Via Melbourne . 
— O J 
Interval Melbourne to Boundary Pier ... 
Longitude of Boundarv Pier ... 
Distance from Pier to Marked Boundary 
of South Australia and New South 
W ales 
Longitude of the Boundary line between 
South Australia and New South 
W ales 
Longitude of Boundary Pier ... 
Distance between Pier and north end 
of Boundary between South Aus- 
tralia and Victoria 
Longitude of north end of Marked 
Boundary line between South Aus- 
tralia and Victoria 
We found previously — 
Longitude of south end of Marked 
Boundary between South Aus- 
tralia and Victoria 
(BL) 
(XIX.) 
h. 
m. 
sec. sec. 
10 
04 
49-44 + 0-174 
0 
40 
59-72 + 0-076 
9 
23 
49*72 + 0190 
0 
0 
10-68 
) 9 
24 
00*40 + 0T90 
h. 
in. 
sec. 
© 
23 
4972 
0 
0 
1*34 
) 9 
23 
51*06 + 0T9O 
h. 
in. 
sec. sec. 
9 
39 
54-04 + 0 153 
0 
16 
03*77 + 0*050 
9 
23 
50*27 + 0T61 
0 
0 
10*68 
(XX.) 9 24 00 95 + 0*161 
23 50*27- 
0 1*34 ' 
0-161 
(XXI.) 9 23 51*61 ±0161 
(XV.) 9 23 51*73 
