scholarly journals Annals of the Astronomical Observatory of Harvard College, Vol. III., Cambridge (U. S.), 1862

1862 ◽  
Vol 23 (2) ◽  
pp. 80-82
Science ◽  
1909 ◽  
Vol 29 (752) ◽  
pp. 861-862
Author(s):  
R. Dec. Ward

Nature ◽  
1890 ◽  
Vol 41 (1063) ◽  
pp. 446-447

Science ◽  
1918 ◽  
Vol 48 (1242) ◽  
pp. 397-398 ◽  
Author(s):  
G. C. Comstock

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