8 



MR. RUMKER'S OBSERVATIONS 



level constantly in the same position to the horizon, so that half the sum of 

 the readings R and L is the zenith point, and half their difference the star's 

 zenith distance. 



Canopus. 



July 4 



9 

 11 



12 



13 

 14 

 16 



17 

 18 



20 

 21 



Barom. 



inches, 



30.152 



30.02 



29.74 



30.05 



29.96 



Therm. 



29.91 



30.05 



29.703 



29.85 



30.025 



29.622 

 29.60 



22 29.94 



23 



24 



25 



28 



30 



Aug. 1 



2 



30.15 

 30.07 



30.21 

 30.24 

 30.26 

 30.25 

 30.25 



58 

 55 

 56 

 49.3 



52 



47.2 

 56.0 

 65.6 

 64.5 

 55 



Readings. 



O I It 



18 47 5.75 



„ 47 0.5 

 ,", 46 55 



O / 41 



341 12 20 



Sirius. 



1828. 



J) 



12 15 



„ 47 1.0 



',",'47 "3.7' 



„ 47 0.3 



55.8 

 56.2 

 54.5 



50.7 



48.5 



52 



47 



45.5 



53 



49.4 



3l 30.233 

 11130.18 

 13 30.062 



14 

 15 





29.87 

 29.62 



16 

 19 

 20 



29.65 



30.102 



30.09 



47.5 



49.3 



50 



50.8 



57.0 



„ 46 56.4 



„ 46 23.2 

 „ 46 36.0 



„ 46 29.5 



„ 46 48.9 



„ 46 33.5 

 „ 46 34.0 



„ 12 18.5 

 „ 12 10.7 



„ 12 12.0 



„ 12 15 



„ 12 16.0 

 „ 12 38.0 

 „ 12 33.0 



57.3 



47.2 

 48 



46 39.0 

 46 43.0 



12 41.5 

 12 30.5 



12 31.0 



Barom. 



July 11 

 12 

 13 

 14 

 15 

 16 

 17 

 18 

 20 

 21 



22 

 23 

 25 

 26 



27 



30 

 31 



Aug.l 

 2 

 3 



12 32.5 



July r ] 29.956 



27 \; 30.04 

 Refraction. . 



53.4 



52.1 



18 46 47.8I 



inches. 



30.05 



29.96 



29.91 



30.05 



29.99 



29.703 



29.85 



30.02 



29.62 



29.60 



Therm. 



29.94 

 30.15 

 30.21 

 30.38 

 30.24 



49.3 



52 



47.2 



56.0 



57.0 



65.6 



64.6 



55 



55.3 



56.5 



54.5 



50.7 



53.7 



55 



47.0 



Readings. 



R. 



32.2 



8.3 



45.0 



30.26 

 30.24 

 30.25 

 30.23 

 30.25 



13 

 14 

 15 

 16 

 19 

 20 



30.06 

 29.87 

 29-62 

 29.65 

 30.10 

 30.09 



46 

 49.3 

 51.3 

 49 



49.4 



50 

 61 

 57 

 57.3 



47.2 

 48.0 



July/ 29.972 



28 \ 30.0741 



Refraction. . 



53.1 



52.7 



+ 1S.4 



341 12 24.12 

 - 19.4 



18 47 7.2 

 i Diifer. = true Mer. Zen. Dist.= 

 True Declination 



Latitude 



Zenith z= — 24".3 



„ „ 26 

 » » 29.2 



17 



18 24.6 

 „ 38.0 

 „ 46 

 „ 37.5 



„ 51.5 

 „ 40.0 



)> J) 15.5 



„ 18.7 



39 57.7 



342 40 26.55 

 i - i7.'9l 



342 40 8.64 

 True Meridian Zenith Distance 

 Declinat. from Nautical Almanac 



Latitude = 

 Zenith = — 24.53 



„ 50 



» 42 

 „ 53.8 



52 



„ 52.0 



17 18 44.33 

 „ + 17-97 



17 19 2.3 



17 19 26.83 

 16 29 17.7 



33 48 44.5 



