"In the fabulous ages of ancient times, the appellations of Mercury, Venus, Mars, Jupiter, and Saturn were given to the planets as being the names of their principal heroes and divinities. In the present more philosophical era, it would hardly be allowable to have recourse to the same method, and call on Juno, Pallas, Apollo, or Minerva for a name to our new heavenly body. The first consideration in any particular event, or remarkable incident, seems to be its chronology: if in any future age it should be asked, _when_ this last found planet was discovered? It would be a very satisfactory answer to say, 'In the reign of King George the Third.' As a philosopher then, the name GEORGIUM SIDUS presents itself to me, as an appellation which will conveniently convey the information of the time and country where and when it was brought to view. But as a subject of the best of kings, who is the liberal protector of every art and science; as a native of the country from whence this illustrious family was called to the British throne; as a member of that Society which flourishes by the distinguished liberality of its royal patron; and, last of all, as a person now more immediately under the protection of this excellent monarch, and owing everything to his unlimited bounty;--I cannot but wish to take this opportunity of expressing my sense of gratitude by giving the name _Georgium Sidus_, _Georgium Sidus ----jam nunc assuesce vocari,_ _Virg. Georg._ to a star which (with respect to us) first began to shine under his auspicious reign. "By addressing this letter to you, Sir, as President of the Royal Society, I take the most effectual method of communicating that name to the literati of Europe, which I hope they will receive with pleasure.--I have the honour to be, with the greatest respect, Sir, your most humble and most obedient servant, W. HERSCHEL." [Sidenote: Herschel.]