ee 
Fe ee a oe 
LONGITUDE OF THE SYDNEY OBSERVATORY. 69 
been made, and it fully confirms the suspicions which I had 
entertained respecting the old value. ‘ok following are the 
results from the recent exchange of signals : 
Mean os bags four signals sent from 
Sydney to Windsor 1m. 28°77s. 
Ditto of. forty sie Windsor to Sydney... Im. 2888s. 
Mean of a 1m. 28°83s. 
If now we reject both the ents deceives referre 
aper, and assign sit weights to the remaining =i 
results, we get ‘the fo llowing 
Assumed longitude of my tcl 10h. 3m. 15°70s. 
Correction from the ten occultati : + 684s. 
Longitude of the eames Observatory 
east of m ine + 1m. 2883s. 
ser ame Eee oer a of the Piet 
Observatory “10h. 4m. 5137s. 
This value exceeds by 0°56s. that obtained by Mr. Rus 
from moon-culminations observed by himself during the vent 
1863-71-72-73-74. 
I trust, before the close of the present session of the Royal 
Societ , to be in a position i. nei ae i estion more com- 
brought before the Astronomical Section of the Society, and 
regarded in the light of an appendix to my paper already 
erred to. 
