. ( 383 ) 



while fVom my foniuila would follow: 



J 885.0 (f / = -f 0".99 sill y -f ()".41 cos y 

 1 ,SJ)G.() „ = — -J ".03 sin ]/ — 1".49 cos ]f 



Tini8 we tijid ;i verv good agi-eeineiit for 1896.0, hut Hie results 

 for 1885.0' caiiuoi at all be brought to haruiouize. Il wouhl be very 

 interesting to investigate also the meridian observations of tlie vears 

 about 1885. 



The annual variation found for iV agrees in absolute value almost 

 exaeth with that of the longitude of the node and ^ve mi<>'hl |)ul 

 for the argument of the ineqnalit}' : y — ^-{-'2U)°. It is probable, 

 however, that we have only to do here with a casual agrecmeid. 



The theoretical value of the "Jovian Evection" is according to 

 the most accurate calculation by Hill : 



rf / = -f- 0".90 sin [</ + 238' + 20^65 {t — 1876.0)]. 



For 1856 the theoretical argument and that of the empirical term 

 are in good agreement, but in the following years they are more 

 and more discordant. 



9. It only remains now to put together the tinal results for the 

 mean corrections of the longitude, as they were derived from the 

 solution of the equations for each year. 



In the following table the column headed (H. contains the residual 

 corrections found after the corrections derived from my curxe had 

 been applied, while the column headed flA^v contains tiie total cor- 

 rections to be applied to the longitude of HANSf:N-NKWCo:\rii. 



d ;. Ö ;.A 



1895.5 — 0"07 +0"73 



t)6.5 —0.05 -fl.21 



97.5 -fO.36 +1.95 



98.5 + 0.22 -I- 2.05 



99.5 —0.48 +1.53 



1900.5 —0.27 +1.88 



01.5 —0.46 +1.79 



02.5 + 0.16 + 2.46 



The nieaji value of the ÖX amounts to — 0."()7, which might be 

 applied as a constant correction to the i-esults according to my curve. 



These results of the transit observations, ^vhich contain the unknown 

 personal errors in observing the moon's limbs may be compared with 

 those of BattepxMann and also with those derived by Franz from the 

 observations of the crater Most ing A. We then iind that the results 

 found by them for the mean longitude for 1885.0, 1896.0 and 



