Ivory's mean Astronomical Refractions. 



(Table III.) 



Alt. 



90.00 



89 



88 



87 



86 



85 



84 



83 



82 



81 



80 



79 



78 



77 



76 



75 



4 

 73 



2 

 71 

 70 

 69 

 68 

 67 

 66 

 65 

 64 

 63 

 62 



61.30 

 61 



60.30 

 60 



59.30 

 59 



58.30 

 58 



57.30 

 57 



56.30 

 56 



55.30 

 55 



54.30 

 54 



53.30 

 53 



52 30 

 52 



51.30 

 51 



50 30 

 50 



49.30 

 49 



48.30 

 48 



47.30 

 47 



J6.30 

 45 



Zen- 



dist. 



00.00 



01 



02 



03 



04 



05 



06 



07 



08 



09 



10 



II 



12 



13 



14 



15 



16 



17 



18 



19 



20 



21 



22 



23 



24 



25 



26 



27 



28 



28-30 



29 



2930 



30 



30.30 



3) 



31.30 



32 



32.30 



33 



33.30 



34 



34 30 

 35 



35 30 

 36 



36.30 

 37 



37.30 

 38 



38.30 

 39 



39-30 

 40 



40.30 

 41 



41.30 

 42 



42.30 

 43 



43.30 

 44 



Mean 

 Refrac- 

 tion. 



00.00.00 

 01.02 

 02 04 

 03.06 

 04.08 

 05.11 



00.06.14 

 07.17 

 08.21 

 09.25 

 10.30 

 11.35 



00.12.42 

 13.49 

 14.56 

 15.66 

 16 75 

 17.86 



00-18.98 

 20. 1 1 

 21.26' 

 22.42 

 23.60 

 24.80 



00 26 01! 

 27.24 

 28.49 

 29.76 

 31.051 

 31.71 



00.32.38 

 33.05 1 

 33.72 1 

 34.40 

 35.09 

 35.79! 



00.36.49 ' 

 37-20 

 37.93' 

 38.66 

 39.39 



00.40.14 

 40.89 

 41.65 

 42.42 

 43.21! 

 44.10 

 44.80 



00.45.61 ! 

 46.43 

 47.27! 

 48.12 

 48.99 

 49.87| 



00 50.76 

 51.66 

 52.47 

 53.49 

 54.43 

 55.38 



00.56.35 



Log. 



0.0000 



0.0085 



0.3097 



4860 



0.6112 



0.7086 



0.7882 



0.8557 



0.9144 



9663 



1.0129 



1.0553 



1.094! 



1.1300 



1.1634 



1.1947 



1.2241 



1.2519 



1.2784 



1 .3036 



1.3277 



1.3507 



1.3729 



1.3944 



1.4151 



1.4352 



1.4547 



1.4736 



1.4921 



1.5012 



1.5102 



1.5191 



1.5279 



1.5366 



1.5452 



1,5537 



1.5632 



1.5706 



1.5790 



1.5873 



1 .5955 



1 .6036 



1.6116 



1.6196 



1.6276 



1.6356 



1.6435 



1.4513 



1.6591 



1.6668 



1.6746 



1.6823 



1.6901 



1.6978 



1.7055 



1.7131 



1.7204 



1.728.4 



1 .7358 



1 .7434 



1.7510 



Log. 



diff. for 



V of 



l"of 



ZD. 



liefn. 



50 



2953 



29 



1728 



21 



1227 



16 



955 



12 



773 



11 



656 



10 



570 



9 



500 



8 



448 



7 



404 



7 



366 



6 



356 



6 



309 



5 



287 



5 



267 



5 



250 



4 



237 



4 



233 



4 



210 



4 



199 



4 



188 



4 



179 



3 



171 



3 



163 



3 



156 



3 



149 



3 



143 



3 



135 



3 



134 



3 



133 



3 



131 



3 



128 



3 



125 



3 



J 21 



3 



121 



3 



118 



3 



117 



3 



114 



3 



112 



3 



108 



3 



107 



3 



105 



3 



104 



3 



100 



3 



100 



3 



99 



3 



96 



3 



95 



3 



93 



3 



91 



3 



89 



3 



88 



3 



87 



3 



86 



3 



84 



3 



83 



3 



81 



3 



80 



3 



78 



Alt. 



46.00 



45.30 



45 



44.30 



44 



43.30 



43 



42.30 



42 



45 



30 



15 

 41.00 



45 



30 



15 

 40.00 50.00 



45; 15 



30 30 



15l 45 

 39 00 .51.00 



Zen. 



dist. 



44,00 



4430 



45 



45.30 



46 



46.30 



47 



47.30 



48 



48.15 

 30 

 45 



49.00 

 15 

 30 

 45 



45 

 30 

 15 

 38.00 

 45 

 30 

 15 



37.00 53.00 

 15 



45 

 30 

 15 



36.00 

 45 

 30 

 15 



35 00 

 45 

 30 

 15 



34.00 

 45 

 30 

 15 



33.00 

 45 

 30 

 15 



32.00 

 45 

 30 

 15 



31.00 59.00 



30.00 60.00 



15 

 30 

 45 

 52.00 

 15 

 30 

 45 



30 

 45 



54.00 

 15 

 30 

 45 



55.00 

 15 

 30 

 45 



56.00 

 15 

 30 

 45 



57.00 

 15 

 3(» 

 45 



58.00 

 15 

 30 

 45 



29.00 ,61.00 



Mean. 

 Refrac- 

 tion. 



00.56.35 

 57.35 

 58.36 

 59.39 



01.00.43 

 01.49 

 02.57 

 03.67 



01.04.80 

 05.37 

 05.94 

 06.52 



01.07.11 

 07.70 

 08.30 

 08.91 



01.09.52 

 10.13 

 10.75 

 11.38 



01.12.02 

 12.66 

 13.31 

 13.97 



01.14.64 

 15.31 

 15.99 

 16.68 



01.17.38 

 18.08 

 18.80 

 19.51 



01.20.24 

 20.98 

 21.73 

 22.48 



01.23.25 

 24.03 

 24.81 

 25.60 



01.26.41 

 27.22 

 28.04 

 28.38 



01.29.73 

 30.59 

 31.46 

 32.34 



01.33.22 

 34.14 

 35.06 

 35 99 



01.36.93 

 37.89 

 38.86 

 39.85 



01.40.85 

 41.86 

 42.89 

 4394 



01,45.0) 



Log. 

 Z 



1.75100 



1.75855 



1.76611 



1.77367 



1.78123 



1.78380 



1.79637 



1.80396 



1.81155 



1.81535 



1.81915 



1.82296 



1.82678 



1.82060 



1 83442 



1.83825 



1.84208 



1.84592 



1.84976 



1.85361 



1.85747 



1.86134 



1.86521 



1.86909 



1.87298 



1.87688 



1.88079 



1.88461 



1.88863 



1.89256 



1.89650 



1.90044 



1 .90440 



1.90838 



1.91.237 



1.91637 



1.92038 



1.92440 



1.92843 



1.93247 



1.93653 



1.94060 



1.94469 



1.94879 



1.95291 



1.95704 



1.96129 



1.96536 



1.96955 



1.97375 



1.97797 



1.98221 



1 .98646 



1.99073 



1.99502 



1.99934 



2.00368 



2.00804 



2.01242 



2 01682 



2.02124 



Log. diff. for 



1'ofj 1" of 

 ZD.'llein. 



25 



25 

 25 

 25 

 25 

 25 

 25 

 25 

 25 

 25 

 25 

 25 

 25 

 25 

 26 

 26 

 26 

 26 

 26 

 26 

 26 

 26 

 26 

 26 

 26 

 26 

 26 

 26 

 26 

 26 

 26 

 26 

 27 

 27 

 27 

 27 

 27 

 27 

 27 

 27 

 27 

 27 

 27 

 27 

 28 

 28 

 28 

 28 

 28 

 28 

 28 

 28 

 29 

 29 

 29 

 29 

 29 

 29 

 29 

 29 



