List, C, Hall, T. G. (Thomas Grainger), 1803-1881 · Philadelphia : Thomas Cowperthwait & Co. and Carey & Hart · leaf 143
iac ? What is the number of each magnitude in theNorthern Hemisphere ? What is the number of eachmagnitude in the Southern Hemisphere ? What is thewhole number of stars of all these magnitudes ? What signs do the astronomers use to designate the dif-ferent stars in the constellations ? How are… … Nebulse. (138) SECTION XXIV.NEBULAE. When the heavens are examined with the tele-scope, we find that the stars, instead of being irre-gularly scattered, are gathered into great clusters.These are called Nebula?. All the different starsare supposed to belong to one of these. The sunand all the stars…
Astronomy
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