...picturesque and beautiful sketch: " Low down in the distant horizon, about the part of the heavens which is intersected by the magnetic meridian, the sky which was previously clear is at onee overcast. Л dense wall or bank of clond seems to rise gradually lugher and higher, until it...

...picturesque and beautiful sketch : " Low down in the distant horizon, about the part of the heavens which is intersected by the magnetic meridian, the sky which was previously clear is at once overcast. A dense wall or bank of cloud seems to rise gradually higher and higher, until it...

...belonging to our atmosphere, or what Humboldt calls " the region of clouds." " Low down," he says, " on the horizon, about the part where it is intersected...by an appearance resembling a dense bank or haze," — " in high northern latitudes, in the near vicinity of the magnetic pole, appearing less dark."...

...aurora have been thus graphically described by Humboldt (Cosmos, Sabine's translation, vol. ip 180) : " Low down on the horizon, about the part where it is...haze, which gradually rises, and attains a height of eight or ten degrees. The colour of the segment passes into brown or violet, and stars are visible...

...perfectly developed aurora borealis. Low down in the distant horizon, about the part of the heavens which is intersected by the magnetic meridian, the sky which was previously clear is at once overcast. A dense wall or bank of cloud seems to rise gradually higher and higher till it attains...