FOOTNOTES:[66]Ball,Story of the Heavens.[67]Ball,Story of the Heavens.[68]Some authorities estimate it even higher.[69]Ball.[70]Hamerton,Landscape.[71]Humboldt,Travels.[72]Clarke,System of the Stars.[73]Kosmos.
[66]Ball,Story of the Heavens.
[66]Ball,Story of the Heavens.
[67]Ball,Story of the Heavens.
[67]Ball,Story of the Heavens.
[68]Some authorities estimate it even higher.
[68]Some authorities estimate it even higher.
[69]Ball.
[69]Ball.
[70]Hamerton,Landscape.
[70]Hamerton,Landscape.
[71]Humboldt,Travels.
[71]Humboldt,Travels.
[72]Clarke,System of the Stars.
[72]Clarke,System of the Stars.
[73]Kosmos.
[73]Kosmos.