8 



Ivory's 



mean 



Astronomical Refractions 



(Table III.) 





Zen. 



a % 



Loga- 



Log. 



iiff.for 





Zen. 





Log*. 



Log 



diff. fori 



Alt. 



dist. 



<z> £ 



rithm. 

 Z. 



V of 



~"~o7 



Alt. 



dist. 



05 



ritnm. 

 Z. 



I' of 



" 1" o7 







zg 



Z.D. 



Refn. 







ZD. 



Refn. 



o / 



o I 



1 It 









/ 



/' 



/ // 









15.00 



75.00 



3 34.70 



2 33104 







10.00 



80.00 



5 20.19 



2.50541 







55 



05 



35.92 



2.33430 



49 



202 



55 



05 



22.76 



2.50887 



69 



135 



50 



10 



37.15 



2.33677 



49 



201 



50 



10 



25.36 



2.51237 



70 



134 



45 



15 



38.39 



2.33925 



50 



200 



45 



15 



28.01 



2.51589 



70 



133 



40 



20 



39.65 



2.34174 



50 



197 



40 



20 



30.70 



2.51943 



71 



132 



35 



25 



40.93 



2.34424 



50 



197 



35 



25 



33.43 



2.52300 



71 



13, 



30 



30 



3.42.21 



2.34676 



50 



196 



30 



30 



5.36.20 



2.52660 



72 



131 



25 



35 



43.52 



2.34929 



51 



196 



25 



35 



39.02 



2.53020 



72 



128 



20 



40 



44.82 



2.35183 



51 



195 



20 



40 



41.88 



2.03387 



73 



128 



15 



45 



46.14 



2.35438 



51 



193 



15 



45 



44.19 



2.53755 



74 



127 



10 



50 



47.48 



2.35695 



51 



192 



10 



50 



47.74 



2.54125 



74 



125 



05 



55 



48.84 



2.35953 



52 



190 



05 



55 



50.74 



2.54498 



75 



124 



1400 



76 00 



3.50.21 



2.26212 



52 



129 



09.00 



81.00 



5.53.79 



2.54874 



75 



123 



55 



05 



51.60 



2 36473 



52 



188 



55 



05 



56.89 



2.55253 



76 



122 



50 



10 



53 00 



2.36735 



52 



187 



50 



10 



600.04 



2.55635 



76 



121 



45 



15 



54.42 



2.36998 



53 



185 



45 



15 



03.24 



2.56019 



77 



120 



40 



20 



55.85 





53 



185 



40 



20 



06.50 



2.56409 



78 



119 



35 



25 



57-30 



2 375^9 



53 



183 



35 



25 



09.81 



256798 



78 



118 



30 



30 



3.58.76 



2.37796 



53 



183 



30 



30 



6.13.18 



2.57192 



79 



117 



25 



35 



4.00.24 



2.38064 



54 



181 



25 



35 



16.61 



2.57589 



79 



116 



20 



40 



01.74 



2.38334 



54 



180 



20 



40 



20,09 



2.57989 



80 



115 



15 



45 



03.26 



2.38605 



54 



179 



15 



45 



23.64 



2.58393 



81 



114 



10 



50 



04.79 



2.38879 



55 



178 



10 



50 



27.26 



2-58800 



81 



112 



05 



55 



06.34 



2.39154 



55 



177 



05 



55 



30.94 



2-59210 



82 



111 



13-00 



77-00 



4.07.91 



2.39430 



55 



176 



08.00 



82.00 



6.34.68 



2.59624 



83 



111 



55 



05 



09.50 



2.39708 



56 



175 



55 



05 



38.49 



2.60041 



83 



109 



50 



10 



11.11 



2.39987 



56 



173 



50 



10 



42.37 



2.60462 



84 



109 



45 



15 



12.74 



2.40268 



56 



J72 



45 



15 



46.31 



9.60886 



85 



108 



40 



20 



14,39 



2.40550 



56 



71 



40 



20 



50.33 



2.61313 



85 



106 



35 



25 



16 06 



2.40834 



57 



171 



35 



25 



54.42 



2.61774 



86 



105 



30 



30 



4.17.75 



2.41119 



57 



|69 



30 



30 



6.58.59 



2.62179 



87 



104 



25 



35 



19.46 



2.41406 



57 



168 



25 



35 



7.02.85 



2.62618 



88 



103 



20 



40 



21.19 



2.41695 



58 



J67 



20 



40 



07.19 



2.63062 



89 



102 



15 



45 



22.95 



2.41986 



58 



165 



15 



45 



11.62 



2 63509 



89 



101 



10 



50 



24.72 



2.42278 



58 



}65 



10 



50 



16.13 



2.63961 



90 



100 



05 



55 



2651 



2.42572 



59 



164 



05 



55 



20.73 



2.64417 



91 



99 



12.00 



78-00 



4.28.33 



2.42867 



59 



162 



07.00 



83-00 



7-25.42 



2.64877 



92 



98 



55 



05 



30,17 



2.43164 



59 



161 



55 



05 



30.21 



2,65341 



93 



97 



50 



10 



32.04 



2 43464 



60 



160 



50 



10 



35.09 



2.65809 



94 



96 



45 



15 



33.93 



2.43764 



60 



159 



45 



15 



40.07 



2.66282 



95 



95 



40 



20 



35.84 



2 44066 



60 



J58 



40 



20 



45.15 



2.66759 



95 



94 



35 



25 



37.78 



2.44370 



61 



157 



35 



25 



50.34 



267241 



96 



93 



HO 



30 



4.39.75 



2.44677 



61 



156 



30 



30 



7.55.64 



2.67727 



97 



92 



25 



35 



41.74 



2.44985 



62 



155 



25 



35 



8.01.04 



2.68218 



93 



91 



20 



40 



43.76 



2.45295 



62 



153 



20 



40 



06.55 



2.68713 



99 



90 



15 



45 



45.81 



2.45608 



63 



153 



15 



45 



12.19 



2.69213 



100 



89 



10 



50 



47.89 



2.45902 



63 



151 



10 



50 



17.95 



2.69718 



101 



88 



05 



55 



49 99 



2.46238 



63 



151 



05 



55 



23.84 



2.70229 



102 



87 



11.00 



79.00 



4 52.12 



2.46556 



64 



149 



06.00 



81-00 



8.29.86 



2.70746 



103 



86 



55 



05 



54.28 



2.46876 



64 



148 



55 



05 



36.02 



2.71267 



104 



85 



50 



10 



56 47 



247198 



64 



147 



50 



10 



42.31 



2.717931 



105 



84 



45 



15 



58.69 



2.47552 



65 



146 



45 



15 



48,75 



2.72225; 



106 



83 



40 



20 



5.00.94 



2.47848 



65 



145 



40 



20 



55.33 



2,72862 



107' 



81 



35 



25 



03.22 



2.48176 



66 



144 



35 



25 



902.04 



2.73405 



109 



81 



30 



30 



05.54 



2.48507 



66 



143 



30 



30 



08.96 



2.73954 



110 



79 



25 



35 



07.89 



2.48810 



67 



142 



25 



35 



16.03 



2.74509 



Jll 



79 



20 



40 



10.28 



2.49175 



67 



140 



20 



40 



23.25 



2.75070 



112 



78 



15 



45 



12.70 



2.49513 



68 



140 



15 



45 



30.65 



2.75637 



113 



77 



10 



50 



15.66 



2.49853 



68 



138 



10 



50 



38.23 



2.76210 



115 



76 



05 



55 



17.66 



2.50196 



69 



137 



05 



55 



46.001 



2.76970 



116 



75 



10.00 



80.00 



5.20.19 



1 



2.50541 



69 



136 



05.30 



1 



85.00 



9,53.96 



2.77376 



117 



74 



