92 



THE GEEAT COMET OF 1858. 



Washington 

 Mean Noon. 



1858. 



June 



Oct. 



Nov. 



Dec. 



1859. 



Jan. 



Feb. 



Mar. 



2.282 

 2.812 

 3.199 

 3.376 

 3.320 

 3.099 

 2.756 

 2.286 

 1.697 

 0.998 

 0.604 



-f 0.195 



0.200 



0.564 



0.831 



0.898 



0.635 



0.062 



-f 0.123 



0.322 



0.621 



1.163 



2.122 



3.894 



7.326 



14.196 



26.874 



39.597 



31.127 



12.813 



2.934 



1.001 



2.572 



3.790 



3.829 



3.789 



3.605 



3.216 

 2.684 

 2.065 

 1.410 



0.766 

 0.174 

 0.332 

 0.723 

 0.985 

 1.115 

 1.117 



4.081 

 3.449 



2.776 



2.054 



1.282 



0.474 



0.333 



1.077 



1.712 



2.180 



2.346 



2.420 



2.432 



2.340 



2.148 



1.914 



1.698 



1.486 



1.346 



1.149 



0.883 



0.561 



0.264 



0.286 



1.587 



7.291 



26.084 



65.057 



83.863 



60.792 



36.632 



22.390 



1 4.485 



2.506 



0.055 



1.173 



2.718 



3.816 



4.661 



5.287 



5.714 



5.957 



6.037 



5.983 

 5.831 



5.616 



5.377 



5.149 



2.414 

 2.334 

 2.256 

 2.163 

 2.013 

 1.813 

 1.613 

 1.434 

 1.295 

 1.210 

 1.192 

 1.197 

 1.235 

 1.326 

 1.534 

 1.929 

 2.668 

 4.166 

 4.829 

 5.643 

 6.837 



8.706 

 11.645 



16.416 



24.376 

 37.424 



54.274 



54.093 



16.538 

 +10.765 



15.493 



13.417 



10.690 



3.916 



2.246 



1.496 



0.744 



0.312 



0.029 



0.158 



0.268 



0.309 



0.286 

 0.209 

 0.092 

 0.053 

 0.205 

 0.353 



4-112.76 

 85.88 

 62.38 

 42.59 

 26.64 

 14.44 

 5.76 

 0.23 

 2.58 

 3.23 

 2.94 

 2.38 

 1.69 

 0.99 

 0.43 

 0.10 

 0.00 

 0.06 

 0.08 

 0.10 

 0.12 

 0.14 

 0.14 

 0.12 

 0.07 

 0.06 

 0.34 

 0.88 

 1.80 

 3.04 

 4.41 

 5.82 

 7.23 

 14.00 

 20.22 

 25.87 

 35.42 

 42.52 

 47.26 

 49.93 

 51.01 



51.07 

 50.67 

 50.34 

 50.56 

 51.67 

 53.90 

 57.35 

 61.99 



+ 



63.08 

 62.78 

 59.27 

 53.25 

 45.47 



36.72 



27.74 



19.26 



11.88 



8.74 



6.04 



3.82 



2.11 

 0.91 



0.22 



0.00 



0.21 



0.30 



0.40 

 0.51 



0.63 



0.76 



0.89 



1.02 



1.17 



1.40 



1.91 



3.06 



5.00 



7.54 



10.45 



13.58 



30.47 



47.65 



64.25 



94.40 



119.44 



138.61 



151.42 



157.58 



156.92 

 149.42 

 135.18 

 114.40 

 87.37 

 54.41 

 15.84 

 28.03 



136.88 

 115.11 

 95.60 

 78.27 

 63.03 

 49.72 

 38.15 

 28.12 

 18.99 



11.91 



8.91 

 6.29 

 4.11 



2.38 



1.11 



0.30 



0.00 



0.38 



0.56 



0.79 



1.08 



1.43 



1.88 



2.43 



3.16 



4.12 



5.47 



7.33 



9.70 



12.23 



14.67 



16.95 



19.08 



28.37 



36.45 



43.91 

 58.03 

 72.07 

 86.62 

 102.02 

 118.44 



135.99 



154.69 



174.48 



195.30 



217.00 



239.42 



262.41 

 285.79 



In forming the normals, the following system of weights was used ; the weight being 

 ven, not to each observation as published by the observer, but to the result of all 



