AT THE OBSERVATORY AT PARAMATTA. 



45 



The mean of all the observations derived from the upper limb is 66° 32' 15",98, 

 from the lower limb 66° 32' 18".215, the mean of the two is 66° 32' 17".096, 

 which gives for obliquity 23° 27' 43". 162; this is probably the most correct way 

 to proceed. From these observations it appears that I observe the Sun's ap- 

 parent diameter too great. 



Northern Solstice, June 1 828. 



1838.' 



Limb. 



Barom. 



Ther. 



Observed South 

 Polar Distance. 



Refract. 

 Parallax. 



Semidia- 

 meter. 



Reduction to 

 Solstice. 



Corr. for 

 Sun's Lat. 



Apparent Ob- 

 liquity of 

 Ecliptic. 



June 2 

 4 

 6 

 7 

 9 



U 

 U 

 L 

 L 

 L 



inches. 



30.03 

 29.90 

 29.76 

 29.49 



29.47 



59 



58 

 57 

 58.2 

 62 



111 

 112 



113 



53 

 8 

 53 

 59 

 10 



10.9 

 6.5 

 12.55 

 16.3 

 14.4 



16.82 

 17.14 

 19.44 

 18.79 

 18.67 



15 47.5 



» 47.1 



„ 46.95 



„ 46.8 



„ 46.7 



17 



2 

 48 

 42 

 31 



13.7 

 17.3 

 54.6 

 48.9 

 48.8 



-0.82 

 0.77 

 0.57 

 0.3 

 0.17 



23 27 27.58 



„ 37.2 



„ 38.4 



„ 36.89 



„ 35.0 



10 

 11 

 13 

 14 

 15 



L 

 U 

 U 

 L 

 L 



29.75 

 29.71 

 30.06 

 29.99 

 29.65 



56 



56 



50 



57.3 



70 



,, 15 



112 48 

 » 55 



113 30 

 » 33 



6.5 



0.3 



SI.7 



37.7 



28.0 



20.90 

 19.15 

 21.71 

 22.19 

 18.86 



46.55 

 46.42 

 46.30 

 46.22 

 46.13 



26 

 22 

 14 

 11 

 8 



55.1 



25.5 



39.65 



23.59 



31.9 



-0.0 



+ 0.17 



0.31 



0.42 



0.49 



39.55 

 31.54 

 39.66 

 37.26 

 33.12 



16 

 17 

 18 

 19 

 20 



u 



L 

 L 

 U 

 U 



29-69 

 30.05 

 30.18 

 30.35 

 29.295 



66.5 



60 



06.5 



58.2 

 58 



4 



37 



39 



9 



9 



22.6 

 53.1 

 37.45 



8.5 



58.7 



18.17 

 22.29 

 23.74 

 21.97 

 21.85 



46.05 



45.97 



45.8 



45.8 



45.8 



5.04 



2.95 



25.57 



12.98 



25.21 



+ 0.53 

 0.50 

 0.49 

 0.43 

 0.28 



32.39 



32.87 

 41.37 

 29.71 

 31.84 



21 

 22 

 23 

 25 

 26 



L 

 U 

 L 

 U 

 L 



30.27 

 30.23 

 30.18 

 30.25 

 30.22 



60 



65.5 



70 



58.3 



61.5 



41 51.3 



10 19.1 



41 26.65 



7 38.6 



37 37.15 



23.12 

 20.31 

 21.13 

 21.49 

 22.99 



2.25 



4.08 



30.72 



38.23 



I8.92 



+ 0.16 

 0.04 



— 0.08 

 0.38 

 0.53 



31.13 

 29.23 

 32.82 

 23.54 

 32.93 



28 



29 



30 



July 2 



4 



L 

 L 

 U 

 U 

 L 



30.27 

 30.15 

 30.13 



29.86 

 29.82 



62.6 



66 



58 



61 



54.5 



„ 32 59 

 „ 30 7.4 



112 55 20.6 

 „ 47 29 



113 9 32.15 



22.69 

 21.14 

 20.48 

 18.66 

 21.00 



45.6 

 45.5 

 45.5 

 45.5 

 45.5 



8 

 11 

 15 



22 

 32 



53.24 



49.12 

 18.12 

 59.4 



27.2 



-0.75 

 0.81 

 0.83 

 0.73 

 0.52 



28.58 

 31.35 

 33.87 

 31.83 

 34.23 



U 

 U 

 U 



30.14 

 30.25 

 30.01 



57 

 57 

 55.5 



112 



42.8 

 0.7 



52.8 



19.37 

 19.49 

 I8.74 



45.5 

 45.6 

 45.6 



37 

 43 

 49 



47.0 

 31.0 



38.7 



— 0.31 



0.15 



-0.00 



34.36 

 36.65 

 35.8 



Mean by upper limbs. 

 Mean by lower limbs. 



23 27 32.37 

 27 34.71 



Mean of centre 



Luni-solar nutat. and reduct. to Jan. I, 1828 . , 



23 27 33.54 

 + 9.5 



Mean obliquity, Jan. 1, 1828 23 27 43 04 



