Social England : a record of the progress of the people in religion, laws, learning, arts, industry, commerce, science, literature and manners, from the earliest times to the present day . rmouth, was thefirst Cape died July 25th, 1881,the victun of acctunulatedniisfortvmes and mishaps,and was succeeded byThomas Henderson (1798-1844J, subsequently Astro-nomer Royal for his one yearsexile he worked with in-credible diligence ; andhis discussion at home ofthe collected data broughtto light, for the splendidbinary star a Ccntauri, an annual parallax of one second ofa
Social England : a record of the progress of the people in religion, laws, learning, arts, industry, commerce, science, literature and manners, from the earliest times to the present day . rmouth, was thefirst Cape died July 25th, 1881,the victun of acctunulatedniisfortvmes and mishaps,and was succeeded byThomas Henderson (1798-1844J, subsequently Astro-nomer Royal for his one yearsexile he worked with in-credible diligence ; andhis discussion at home ofthe collected data broughtto light, for the splendidbinary star a Ccntauri, an annual parallax of one second ofarc, implying a distance of close upon twenty billions of was the earliest authentic result of the kind obtained,although its announcement, January 8rd, 18.]9, was slightlyanticipated by Bcssels regarding (il Cygni. Sir Thomas :Maclear (1794-1879) came third on the list ofroyal astronomers at the Cape, and his re-measurement ofLacailles arc of the meridian was one of the most importantgeodetical operations of the century. In this direction Englandtook the lead of other nations by the trigonometrical surveys ofIndia, England, and South Africa, usefully supjalemented by the. {From SIB GEOEGB BIDDLE AIRY. The lioyal Observatory, Greenwich, by E. , Heligiaits Tract Society.) ASTRONOMy, Ifil5-l,s4i;. 243 pendnlinn-swinging experiments conducted in various parts ofthe globe by Sabuie, Foster, and Kater. These investigationsof the earths figure may be associated with Bailys elaboratedetermination of its mean density. Adopting and improvingCavendishs method of 1798, he arrived in 1842 at the nearlyexact conclusion that our globe weighs 566 times more than ifcomposed throughout of water. Sidereal science made a fresh start when John Herschel and
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