( 291 ) 
Besides the individual results I have given in the table above 
the daily means and either the former or the latter may be 
combined with equal weights. Probably, as the results of one day 
agree better with each other than with those of other days, the latter 
method will be the best, but we find that here this makes little 
difference. 
Hence I accept as provisional result of my observations of the 
moon : 
Longitude of Chiloango — 48m 33.89 
The differences between the daily means are still rather large, 
but we may expect that a final reduction will improve this. 
Finally mention must be made that three times I had an oppor- 
tunity of comparing my chronometer with Greenwich time as shown 
by the chronometers on board the ships that touched at this port. 
In that way I found for the longitude of my place of observation: 
— 48m 3787 
8.0 
14.7 
| Mean value — 48m 20s] 
It will be seen that as yet no great weight can be assigned to 
the result of this mode of determining the longitude. 
(December 24, 1901). 
