ÖFVERSIGT AF K. VETENSK.-AKAD. FÖRHANDLINGAR 1899, NIO 2. 75 



or 



T cosp cos + s cosp sin + ;( sinp == + v^ 



Avhere the upper sign is to be taken, wben p is positive. In 

 calculating the coefficients in this equation, (the sun's lon- 

 gitude) is taken from Berliner Jahrbuch, and as the time of ob- 

 servation is not given, 1 have assumed that the observations are 

 always made at noon. For getting the j9:s, which are not 

 published by Dunér, I wrote to him, and he kindly sent me 

 the following quantities, which are differences of declination 

 between the point of observation on the east limb of the sun 



and its centre. 



Tab. I. 





9^ = 15 





7> = 15 





9? = 15 





1887 



June 3 



+ 4' 



1887 Aug. 6 



+ 36" 



1888 July 28 



+ 143" 





3 







6 



+ 38 



Aug. 1 



+ 61 





3 







1888 May 5 



+ 128 



3 



+ 75 





4 







10 



+ 115 



3 



+ 56 





4 







12 



+ 97 



4 



+ 43 





15 







16 



+ 91 



7 



+ 26 





16 







19 



+ 70 



7 



+ 24 





17 



+ 339" 



19 



+ 75 



11 









18 



— 109 



20 



+ 66 



12 



— 14 





18 



4- 204 



20 



+ 72 



21 



— 56 





19 



— 119 



22 



+ 47 



1889 May 23 



+ 50 





24 



— 206 



22 



+ 55 



24 



+ 43 





25 



+ 328 



23 



+ 52 



24 



+ 44 





25 



+ 336 



24 



+ 44 



25 



+ 45 





29 



— 202 



29 



+ 15 



28 



+ 21 





80 



— 210 



June 6 



— 32 



June 2 



— 9 





Julv 1 



— 227 



6 



- 21 



2 



— 20 





2 



— 226 



12 



— 75 



3 



- 17 





3 



-233 



13 



— 81 



4 



— 20 





12 



+ 228 



13 



— 82 



4 



— 20 





13 



+ 224 



20 



— 130 



5 



— 22 





14 



+ 194 



21 



-134 



6 



— 18 





22 



+ 145 



21 



— 136 



7 



- 40 





23 



+ 117 



22 



— 127 



7 



— 39 





23 



+ 122 



22 



— 148 



8 



- 54 





26 



+ 48 



24 



-161 



11 



— 64 





26 



+ 111 



24 



- 161 



13 



— 75 





27 



+ 96 



25 



— 168 



14 



— 91 





28 



+ 97 



26 



— 178 



14 



- 89 





30 



+ 77 



27 



— 183 



15 



— 91 





30 



+ 76 



July 16 



+ 169 



15 



- 98 





31 



+ 73 



20 



+ 137 



16 



— 101 





A ug. 4 



+ 47 



20 



+ 139 



17 



-113 





5 



+ 37 



21 



+ 128 



18 



— 114 





5 



+ 37 



27 



+ 94 







