14 



MR. RUMKER'S observations 



2 a Centauri. 



Barom. 



Therm. Stars observed. 



S. Pol. Dist. corrected for Polar point. 



I. 



II. 



III. 



IV. 



Refrac- 

 tion. 



July 11 

 13 

 14 

 15 

 17 

 19 

 25 



inches. 

 29.74 

 30.06 

 30.17 

 30.13 

 30.08 

 30.10 

 29.84 



o 

 43 



46.5 



39.0 



42 



38 



46 



46 



direct 

 direct 

 by reflect, 

 by reflect, 

 by reflect, 

 direct 

 direct 



263 



30 34 17.0 

 34 17.0 

 9 

 „ 9 

 „ 9 

 30 34 12 

 „ 34 17 



25 

 25 

 32 



9.6 

 8.0 



26.0 



25 



36 

 5.7 



13.5 



34 16.0 



9 31.0 



„ 28.0 



„ 33.5 



34 14.8 



„ 18.0 



34 18.0 



37.3 

 38.3 

 39.0 

 16.0 

 20.5 



34 



17 

 Mean 15.3 



29.93 

 30.13 



45.4 

 39.7 



direct 

 by reflect. 



30 

 263 



34 15.8 

 9 27.3 



34 

 9 



9.2 

 29.0 



34 16.3 

 9 30.8 



34 13.6 

 9 38.2 



28.65 



Half Differ, by a mean of the 4 Microscopes .... 116 17 38.8 



Middle of the Refraction „ „ 28.65 



True Zenith Distance 26 18 7-45 



Apparent Declination 60 6 54.17 



Latitude 33 48 46.72 



Canopus. 



1826. 



Barom. 



Therm. 



Stars observed. 



S. Pol. Dist. corrected for Polar point. 



II. 



III. 



IV. 



Refrac- 

 tion. 



March 4 

 5 



8 



11 



12 

 13 

 14 

 16 

 18 



inches. 



29.71 

 29.51 

 29.89 

 29.92 

 29-98 

 29.88 

 29.87 

 30.19 

 30.06 



82 



66 



62.5 



66.5 



67.2 



71.0 



77 



68 



81 



direct 

 by reflect, 

 by reflect, 

 by reflect, 

 direct 

 by reflect, 

 direct 

 direct 

 direct 



37 

 255 



37 

 12 

 ,, 12 

 „ 12 

 37 37 

 255 12 

 37 37 

 „ 37 

 » 37 



23 

 14.7 

 14.7 

 11.0 



1.8 

 14.0 



7.3 

 11.2 



7.0 



37 

 12 

 12 

 12 

 37 

 12 

 37 

 37 

 37 



23 



36.2 



33.0 



29.3 



16.0 



33.8 



15.0 



15.0 



13.5 



36.5 

 32.7 

 29.0 

 27.7 

 21.6 

 26.5 

 24.3 

 21.1 

 25.5 



37 30.3 

 12 35.0 

 28.4 

 24.2 

 11.0 

 3.3 

 10.3 

 11.0 

 13.9 



12 

 12 

 37 

 12 

 37 

 37 

 37 



12.8 

 9.2 



29.96 

 29.80 



75.04 

 66.5 



direct 

 by reflect. 



37 37 10.06 

 255 12 13.6 



37 13.9 

 12 33.1 



37 25.8 

 12 29.0 



37 13.3 



12 22.7 



18.6 

 18.87 



Half Differ, by a mean of the 4 Microscopes .... 108 47 34.42 

 Middle of the Refraction + 18.7 



108 47 53.12 



True Altitude 71 12 6.88 



Apparent South Polar Distance 37 23 14.67 



Latitude 33 48 52.2 



