

98 



Sept. 12 



13 

 14 

 15 

 16 

 17 

 18 



19 

 20 



21 

 22 



Aon Arbor. 

 12.5 



• • 



• • 



-f-14.47 

 -fl6.65 



♦ • • 



THE GREAT COMET OF 1858. 





Berlin. 

 9.6 



Liverpool 

 8.5 



4-14.33 .... 

 -f-14.72 +13-93 



# • 



♦ • * 



+18.84 

 +17.32 .... +12.06 +10,13 



— T—l&tOQ m 9 • « 



+14.10 +13.48 



• 



Konigsberg. 

 6.25 



M 



Bonn 

 6.0 



Kremsmiinster, 

 5.9 



Pulkova. 

 5.8 



+12.59 

 +13-57 

 +16.04 +1G.06 +21.30 



• • • ♦ 



» • » • 



+15.48 

 +13.63 



♦ • 



+10.53 +11.66 +15.72 +11.15 



• • 



+16.64 +14.35 



• ♦ 



+17.81 

 +13.83 



+15.17 +18.13 +11.08 +14.28 



• • 



+12.90 +15.55 



• • 



Paris. 



4.8 



+15*63 +22.06 +13.93 +14.42 +13.41 +17.28 



• • 



+ 9.83 +25.92 

 .... + 7.51 

 .... +13.09 



♦ • 



Geneva. 

 4.25 



+ 10.28 



+19.45 +15.92 



+17.69 +12.28 



• . . . + 7.63 



• • • 



♦ • 



• • 



+13.14 



• • 



+18.35 



Mean, +14.88 +14.66 +15.47 +15.01 +13.19 +15.39 +12.19 +16.82 +12.93 



The existence of systematic error seems pretty well made out between the different 

 observatories; and the Bonn, Pulkova, and Geneva observations made with small 



a 



telescopes, do certainly place the comet nearer the Sun than the others. But the 

 observatory which places the comet farthest to the north is Paris, with a very small 

 telescope. Also Kremsmiinster and Konigsberg, with much smaller telescopes, put the 

 comet farther from the Sun than Ann Arbor and Berlin. These facts militate strongly 

 against this supposition. The quantity used in forming the normal was -|-14".44, and 

 the preceding elements give +13".84 for the same quantity, from which it may be 

 judged how well each of the above observations is satisfied. 



Again, if this hypothesis 



sufficient to 



for the systematic errors, we 



hould have almost perfect agreement in the right ascensions 

 his was the case. 



Let us see whether 



Sept 12 



13 

 14 

 15 

 16 

 17 



18 



19 



20 

 21 



22 



Ann Arbor. 



7?62 

 11.36 



• * 



• ft 



14.63 

 13.47 

 13.13 



17.26 



16.22 



• • 



Mean, —13.38 



Berlin 



// 



• • 



18.00 



17.88 



• t 



• 



• ♦ 



9.98 

 11.95 



• • 



14.45 



Liverpool. 



1 l".69 



8.83 



11.09 



9.02 



10.16 



Konigsberg. 



7.21 



9.26 



7.87 



11.24 



12.52 



13.64 



5.55 



9.39 



9.59 



Bonn. 



13'.13 



7.51 



14.82 

 19.26 



13.68 



Kremsmiinster. Pulkova. 



10'!38 

 12.00 

 6.96 



10.77 

 15.02 



• • 



13.13 

 10.89 



• • 



12.99 



11.52 



18.72 



ft • 



• • 



10.14 

 13.25 

 10.07 



■ ft 



• ft 



13.05 



Paris. 



4.79 

 9.48 

 9.41 



• • • 



♦ • 



15.38 

 18.14 



20.02 



• • 



12.87 



Geneva. 



974 

 14.06 



9.83 

 16.48 



15.42 



• • 



8.18 



12.29 



