( 426 ) 



Hence : 



(V)rrccli(»ii of tlio coiiloimial iiiolioii of tlic node -}- l-'V' 



(SH HMH) + i>".0 



If for the coiistajit of the iiiooji's parallax we accept, instead of 

 Hansen's \alue, thai of Xkwco.mi? which is laru-ei- iiv ()".41, the cor- 

 responding \ariation in the L(S Itecomes (I". 41 sm z or about: 

 — ()".IH -|-()"/10 sill /. lieiice that in the /> an<l r respectively: 

 -f- ()".!() cos H and + ()".H) sin 6. 

 We then obtain : 



Weio-ht 



18(>8 — 0"0r) ' 4- V'O ' 3 



■is«)t> ' +0.21 4-11 :i j \ 



1890 — () liil + S.4 1 3 



Mean 1885 O'lO +69 



Hence: 



iSH I'.HKI .... -L8".l>. 



The iidliience on ihe linal re>nlls iherel(»i-e i> immaterial. 



Astronomy. — '^ ( \>iitfihiiti(>n'< to tlw tlclcnriii'ition of (/('0(/i'tiii/iir(ii 

 posifiot/s on tlw Wcst-coitst of A/'ric"". (II). 1>V C. SaNDERS. 

 (('(inimunicated by Di-. K. V. van de Sande Hakhlvzen). 

 I ( loininunicalrii in Ihf inculiiig of (JcIoIkt :>!. 1003). 



I. Ih'tcrniiitdtioii of tlo' loiKjitiide of ChilodiKjo nuidc 

 in tin' ijiuirs niOl on<l 1902. 



1. hi a |)recedinjj: paper- "( 'onlribntions lo the determination of 

 ideographical positions on the West-coast of Africa" ^) I ha\e uiven 

 some |)rebminaiy results obtained for the longitnde of Chiloango '). 

 After that time until my temporary return to Kurope in the autumn 

 of 1002 I have, as fai' as possible, couliiuied my ol)servations and 

 extended them to the 2'' limb of Ihe moon. Lately 1 have been 

 able to reduce the whole set of obserxations with all possible accuracy 



h Pfocoedings Acad. Amst. IV, 1001, p. 274. 



~) Owing to an error in the sign, the results given tlirre foi- Marrii 3 and May 1 

 were wrong. 



