( 420 j 



For hr and /; 'wo HjkI IVoiii the irieaii of all the observations 

 iisod here : 



//, =z + 0".48 



/•, = -f U .17 

 s(» llial Ihe coiiiplcte roi-niuhie l)ecoine : 



// = + 0^43-1^28^/y/j;:;()7°+li»°.4(/~l870 <>) ! — <>''••-!-' tuM'-^-'r—'^'/+ 7°) 

 /~-f <>M74-1".28 ms |8ü7'+19^4(^— 18713.0)1 - i)\:Vlsin (2.t-8,/+7") 

 — O". 45 shi O 



oi' piitlinu' for 'In: o ./ -j- 7' and for O Iheii' values and (•(inihinin^ 

 ihe lernis /' and l,[y \\ hich ha\e ihe ^aine period ; 



I, = ^ 0".48 — 1".28 sin yM)T + 19\4 (/ — 187(J.0)| 

 — O". 32 n,s |11)S^ — 9'. 07 {t~ 1870.0)1 

 /■ = + O". 17 + l".(i5 roN |297 + 19". 4 (^-1870.0)1 

 — O". 82 xh, |198' — 9°. 07 (/ — 1870.0) | 

 The \alnes dei'i\ed tVoni these fornndae I call Coin)). Jl and the 

 dilferences hetween ihese and Ihe // and /■ derived direellv frcnn Ihe 

 observations are sho\vn in Ihe lal»le of paue 4iti under the headin;j,'s 

 0-CJI. 



Also the O- (' Il >.\\\\ show a distinct svsteniatic (diaracler. The 

 jHunber of permanencies of siii'ii has bnt little diminished, vet the 

 mean discordance has become somewhat smallei'. 

 We tind : 

 Mean discoi-dance from ('. 1 in h rb U".02 in /• ± 0".08 



from C\ II in // ± 0".58 in /• ± 0".57 



while nsinu' onlv Ihe secojid and thii-d series we shonhl ha\(MV)nnd : 

 Mean discordance from ('. 1 in /' ± 0".57 in /• ± 0".54 



from C. II in // ± 0" JO in /.■ ± 0".49 



Finally I ha\e em|tlove(l the ditferences () — ('II to invest i.^-ate 

 once more whether the obser\ations reveal an ine(pialitv with a 

 period of i^).74 years. T)isregardini>- the less accnrate lirst series, and 

 nsinji' directlv the amnial results, I found : 



for the term in // + 0".04 cm (2 :% -f 8 F-o E) 



for the term in /• f 0".08 xln (2 n -f 8 1'— 5 E) 



As we see the coefticients are a,uain found to be small, n\ Idle their 

 theoretical \alne amounts to -|- ()".6(S. 



18. After the communication of \\\\ lirst paper lo the Academy, 

 1 have still made some new calculations al)out the errors of lalitu<le, 

 of which the results follow hei'e. 



The computation ,ui\"en on j). .')<S() of my first paper had shown 

 that especially the values of // fron» tli<' «'«piatioii 



