34 



entitled to greater weight than others ; but it would have been a delicate matter 

 to discriminate where all is excellent Also each night's work, without reference 

 to the number of measures, has a unit of weight. It may be presumed that the 

 number has been deemed sufficient to exhaust very nearly the accidental error 

 of seeing and hearing, in relation to the wires and clock. 



Authorities for :3f. a, 1th Mag., (7648 B. A. C.) 











Measures. 









Measures. 







o / 



(; 



-'■V,'^^*^ 









\ II 



^^^.^^^.^ 



1847. Jan. 1, concluded 



a = 



327 32 



16.88 



846 



a! = 



13 



23 39.72 



485 



By Cambr'e Equatorial, E., 



da„ = — 





1.65 



70 



dai„= — 





0.75 



58 



By " " Mass. 



= — 





0.88 



73 



= + 





2.38 



71 



By Christiania Mer., 



= + 





1.10 



25 











By Durham Equatorial, 



= + 





0.55 



174 



= — 





1.05 



62 



By Konigsberg Heliometer, 



= — 





0.34 



26 



= — 





1.63 



26 



By Makerstoun Equatorial, 



= + 





0.67 



130 



= + 





0.37 



61 



By Naples " 



= — 





1.00 



84 , 



= + 





0.19 



84 



By Washington " 



= — 





0.53 



248 







0.04 



103 



By Wrottesley's " 



= — 





1.03 



16 



= + 





0.73 



20 



jluthorities for :!^ b, 9th Mag. 



1847. Jan. 1, concluded 



By Berlin Equatorial, 



By Kasan " 



By Konigsberg Heliometer 



By London Equatorial, 



By Pulkova, " 



By Washington " 





o 



/ 



;/ 



Measures. 







o 



/ // 



Measures. 



b = 



327 



57 



42.19 



^726^ 



b' 



= — 



13 



25 57.65 



366 



db„= + 







0.10 



250 



db'„ 



= — 





0.54 



240 



= + 







0.48 



8 





= + 





3.82 



4 



= + 







0.16 



16 





= + 





0.42 



16 



= — 







0.31 



12 









1.28 



12 



= — 







1.09 



40 





= + 





0.53 



40 



== + 







0.78 



100 





= + 





0.79 



54 



Authorities for ^ c, 9th Mag. 









Measures. 











Measures. 





O 



/ // 



^„^^^^^ 





o 



/ 



II 



-'■^^^^^^ 



1847. Jan. 1, concluded 



c = 328 



2 25.67 



181 



c' = 



13 



35 



4.05 



112 



By Berlin Equatorial, 



dc„= + 



0.49 



45 



dc'„= -\- 







1.58 



45 



By Casan " 



= — 



1.58 



18 



= + 







0.18 



4 



By Konigsberg Heliometer, 



= — 



0.83 



20 









0.63 



20 



By Pulkova Equatorial, 



= — 



0.43 



10 



= — 







1.06 



10 



By Venice Meridian, 



= — 



0.19 



25 













By Washington Equatorial, 



= + 



0.80 



63 



= — 







0.33 



30 



By " Meridian, 









= — 







0.05 



3 



Jluthorities for i(i d^ 9th Mag. 



Measures. 



+ 26 38.51 42 di„ 



By Washington Equatorial, d„ 



By " " d, = b„+ 1 41 16.03 23 



1847. Jan. 1, concluded d = 329 48 56.76 65 



Measures 



('„ +00 22.91 18 



rf'„= i'„+ 10 41.60 11 



13 15 16.43 



29 



