( 424 ) 



the xaliics adopted for llie lle\iii-e of llie iiisli-iiiiieiil in the diifereiit 

 years, parlicularlv IxMweeii those hefoiv and after the piciriii.U' of 

 'the cube in the aiitunni of l'S()5. hut these dilfeicnees are nentmlized 

 for the greater pari l>v the (hlfeivut vahies whicdi are adopted for 

 the so-called li — I) correction, and therefore 1 ihouiiht itest not to 

 make more suhdix isions. In this wav I found : 



(ireenw ich (^ f Hanskn 



iH62— J.Sin + 0".41 



1S(3<S— 1H74 — .22 



1 «95— 1902 + (>.:')! 



For Washiniilon 1 could onlv use the \alues given by Xkwcomu in 

 his Astroiioniicdl Onisfunts p. -M. 1 sup[)osed thai the values given 

 thei-e for ó'e, if again 1 subtracted fi'om them the reduction to the 

 "Pnlkowa refraction'", wouhl agree with those which follow inime- 

 diatelv from the results in the \V<isli'ni<it(>ii ithscrrntioiis ^]. lii this 

 way I found : 



Washington ^U Hanskn 



l,Sfi2- 1S74 — ()".()2. 



Hence the corrections which must l)e applied to the obliquity of 

 the ecliptic according to Hanskn itecome: 



1862— i8(>7 f)f = + 0".2() 



:1H(58- 1<S74 —0.12 



1895—1902 +0 .31 



Tlie results of Imïanz cannot be correcliMl in thi> way. 1 assumed 

 for them, according to Xkwcomu's tiual foiuiula fJ ? :=: + 0"-24. 



We now can determine (bi-eclly the inllueiice of these cori'ections 

 on the eo(>flicients of sin n au<l ms n dei-i\-ed from the observations, 

 l-'or we have as a suflicieut approximation : 



,/ (S =: r.os 8 srr (f ^iii I </ & := O.lMi s!n I ,1 t 

 = 0.96 ((-(W 6* sill II -f- .-■/// /9 ni.< ii) il f 



and the corrections that nuist be appbed to the coefticieiMs h an<l c 

 are thei-efoi-e -|- 0.915 ms H d f- and -f 0.9»; sin H <U respectively. 

 Hence we tind as the cori-ected values of h and r: 



1) I could not make out lliis wiLli ceiluinly IVom llu' sncciiict <lisciissi ti in tlic 

 Anlr. ('nyifi/., and, as il is wcll-kunwn, a nioiv .Iclailcd iiiil.licaHon (.f lln^sf iiüjior- 

 tant rescarclics was fiuslcaled by circiiiiislanccs. 



