Knowledge, Volume 5Wyman & Sons, 1884 - Science |
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angle appear become Black body called cause close colour Column communications consider considerable continued corresponding course described direction doubt draw earth effect equal evidence existence experience fact force four give given hand hour idea important increase interest kind KNOWLEDGE known lead less letter light London look machine March marked Mars matter means miles move nature never noticed object observed obtained occur once original passing period persons planet play position possible present probably produced question readers reason referred regard remains remarkable respecting result round Satellite seems seen shown side space stars suggested suppose surface taken takes theory things tion triangle turn White whole