NOTES TO BOOK VII. :>1.~> 



in Schumacher's Astronomische Nacltrichten. He died the 

 7th of June, 1826. Littrow's Note. 



(x.) p. 284. I have left the statement of published 

 Observations in the text as it stood originally. I believe 

 that at present, the twelve places contained in the follow- 

 ing list publish their Observations quite regularly, or 

 nearly so ; Greenwich, Oxford, Cambridge, Vienna, Ber- 

 lin, Dorpat, Munich, Geneva, Paris, Konigsberg, Madras, 

 the Cape of Good Hope. 



Littrow, in his translation, adds to the publications 

 noticed in the text as containing astronomical Observa- 

 tions, Zach's Monatliche Correspondenz, Lindenau and 

 Bohnenbergers Zeitschrift fur Astronomic, Bode's Astro- 

 nomisches Jahrbuch, Schumacher's Astronomische Nach- 

 richten. 



(Y.) p. 287. I may notice among instances of the 

 patronage of Astronomy, the reward at present offered 

 by the King of Denmark for the discovery of a Comet. 



(z.) p. 292. The belief in an appreciable parallax of 

 oomo of the fixed stars appears to gain ground among 

 astronomers. The parallax of 61 Cygni, as determined 

 by Bessel, is 0".34 ; about one third of a second, or 

 1-10000 of a degree. That of a Centauri, as determined 

 by Maclear, is 0".9, or 1-4000 of a degree. 



(AA.) p. 295. Before Flamsteed, the best Catalogue 

 of the Stars was Tycho Brahe's, containing the places of 

 about 1000 stars, determined very roughly with the naked 

 eye. On the occasion of a project of finding the longitude, 

 which was offered to Charles II., in 1674, Flamsteed 

 represented that the method was quite useless, in conse- 

 quence, among other things, of the inaccuracy of TychoV 

 places of the stars. Flamsteed's letters being shown 



