475 
my observations in every way symmetrically. As m.E. for one pair 
of observations L.,R. + 1720 was now found, from which + 0"25. 
would follow for my final result. 
In every way, therefore, the much greater reliability of the 2nd 
series is shown. However, the result of the 1st series happens to 
agree practically completely with that of the 2™¢ and it is therefore 
of no importance what relative weight we attach to each. 
As wy final result I accept: 
Latitude of Matuba Observ.-Pier. -—5° 16’ 59'1 + O'S. 
3.. Determination of the latitude of Cabinda. 
For the purpose of the determination of the geographical position 
of Cabinda, which I undertook at the request of the Governor of 
the district, a concrete pier was built at a short distance from the 
meteorological post. 
For the determination of the latitude | observed zenith-distances in 
the meridian, and I contented myself this time with 4 positions of the 
circle. But even with this restriction I was not able to carry out my 
programme (8 stars each time) completely in the short time at my disposal. 
For the determination of the time my Hoxnwié-chronometer stationed 
at Cabinda served. On Sept. 29% and 30 1 and 2 observations 
respectively in position R were failures; the corresponding observa- 
tions in position L are therefore omitted also. (See following table). 
Very striking in these results is the rather marked deviation 
always in the same sense of 61’ Cygni, and if we should assume 
that I had not pointed the telescope on 61' Cygni, but on a point 
nearer to the centre of gravity of the two stars, the deviation would 
become even greater. I considered, therefore, that [ should not be 
justified in excluding these results. 
Although the number of observations obtained in the various 
positions of the circle is very different, | think it is best to assume 
the simple mean valne of the 4 partial results as my final result, 
and to deduce the: m.e. from their mutual agreement. The observa- 
tions clearly are less accurate than those at Matuba, due perhaps 
partly to a lesser stability of the pier. 
I assume, therefore, retaining 61 Cygni. 
Latitude Cabinda Observation-pier. —5° 33’ 223 + O'6. 
If 61 Cygni is exelnded, the results of the 4 days receive the 
corrections + 1"02, + 0"54, + 1"90 and + 1709 and the mean 
result becomes — 5° 33’ 212. 
