152 



MR. RUMKER'S observations AT PARAMATTA. 



Page 46. — Obliquity of the Ecliptic deduced from the solstices observed at 

 Paramatta : 



With the Repeating Circle. 



Year of 

 Obserration. 



Observed Mean 

 Obliquity. 



Jan. 1822 

 1823 

 1821 

 1827 



1828 

 1829 



23 27 41.96 

 „ „ 44.12 

 „ „ 42.67 

 „ „ 44.52 

 » » 39.35 

 „ „ 38.75 



Reduction 



to Jan. it 



1828. 



-2.7 

 -2.25 

 -1.80 

 -0.45 





 +0.45 



Mean., 



Mean Obliquity, 

 Jan. 1, im 



22 27 39.26 

 „ ,, 41.87 

 „ „ 40.87 

 „ „ 44.07 

 » » 39.35 

 „ „ 39.20 



23 27 40.77 



With the Mural Circle. 



Year of 

 Observation. 



Jan. 1823 



1827 

 1828 



Observed Mean 

 Oljliqutty. 



2% 27 44.36 



42.63 



43.19 



Reduction 

 to Jan. 1, 



-2.25 



-0.45 

 0.0 



Mean. 



Mean Obliquity, 

 Jan. 1, W28. 



23 27 42.11 



„ „ 42.18 

 .. „ 43.19 



23 27 42.49 



The error is on the side of the Repeating Circle. 



Omitted in page 111.] 



y Piscis Volantis. 



Superior Culmination. 



1828. 



April 4 

 5 

 6 



7 

 10 



11 



12 



inches. 

 30.01 



30.03 



30.20 



30.14 



29.75 

 29.84 

 29.95 



53.3 



69 



62J 



66.5 



71 



64 



63.5 



April 8 ... Mean .. 

 Refract, and Reduct. 



Superior Culminat. 

 Inferior Culminat.. 



Half Diff. S. P. D. 



Microscopes. 



20 43 



„ „ 41.7 



„ „ 42 



n « 39 



» ., 34.8 



„ „ 33.9 



„ „ 30.0 



II. 



37 

 „ 41.7 

 „ 40.5 

 „39 

 „ 36.1 

 „ 28.2 

 „ 27.5 



20 37.7 

 -10.5 



35.7 

 10.5 



20 27.2 

 340 26 39.6 



19 46 53.8 



25.2 

 26 44.2 



46 50.5 



52 

 „ 41.7 



„ 48.7 

 „ 50.2 

 „ 44.7 

 „ 37.9 

 „ 40.1 



46.27 

 10.5 



35.8 

 26 36.2 



46 59.8 



IV. 



40.7 



„ 50.3 



„ 39.7 



„ 39.2 



„ 35.1 



„ 29.7 



„ 28.9 



36.33 

 10.5 



25.8 

 26 44.2 



46 50.8 



Inferior Culmination. 



1828. 



Apr. 7 



8 



9 



10 



11 



inches. 

 30.05 



29.83 



29.73 



29.85 



29.88 



53 



55 



53 



47.5 



49.7 



Apr. 9 ... Mean 

 Refract, and Reduct. 



Microscopes. 



I. 



340 30 56 

 »» »» 55 

 „ „ 49.7 

 .. >, 58 

 „ „ 48.4 



340 30 53.4 

 -4 13.8 



340 26 39.6 



II. 



31 0.2 

 30 55.5 



30 49.7 



31 6.6 



30 58.0 



30 58 

 4 1.3.8 



26 44.2 



III. 



31 1.4 

 31 0.2 

 30 55 

 30 67 

 30 56.5 



30 50.0 

 4 13.8 



26 36.2 



26 44.2 



Mean of 4 Microscopes 19 46' 53".72 by 12 Observ. 



Page 128. — ^The barometer for the lower culmination of a Muscse on June 23, 

 was 29.84 inches in lieu of 29.48 inches, and the corresponding refraction 

 4' 26".52, which makes the south polar distance by a mean of the 4 micro- 

 scopes for that Set of Observations 21° 48' 49".63. 



LONDON: 



printed by RICHARD TAYLOR, 



RED LION COURT, FLEET STREET. 



