Star-land; being talks with young people about the wonders of the heavens (1899)
Ball, Robert Stawell, Sir, 1840- [from old catalog] · Boston and London, Ginn & company · leaf 153
to its brothersand sisters in thesuns family it willbe necessary to useyour compasses indrawing anotherlittle sketch, bywhich the sizes ofthe four bodiesthemselves shall befairly represented.Remember that thelast drawing showednothing whatever about the sizes of the bodies ; it merelyexhibited the… … THE PLANET MERCURY. 141 the same size (though the earth is a trifle the larger)that it is not necessary to attempt to exhibit thedifference between them, so we shall represent bothbodies by circles, each 1 j inches in radius. Mars, likeMercury, is one o( the globes smaller than the earth,and the…
Astronomy
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