NOTES. H 



(Hnmboldt, Asie Centrale, T. iii. p. 592 ; and Sedillot in the Prolegomenes 

 d'Oloug-Beg, p. 123125.) 



(181) p< 94._Kosmos, Bd. ii. S. 327332, and 485 Anm. 58 ; English 

 edition, p. 287292, and notes 446448 ; Humboldt, Examen Critique de 

 1'Histoire de la Geographic, T. iv. p. 321336 ; T. v. p. 226238. 



( 182 ) p. 94. Cardani Paralipomenon, lib. viii. cap. 10; (Opp. T. is. ed. 

 Lugd. 1663, p. 508). 



( 183 ) p. 95. Kosmos, Bd. i. S. 90-93 : Eng. edition, p. 7880. 



( 184 ) p. 96. Baily, Catalogue of those Stars in the Histoire Celeste of Jerome 

 De Lalande, for which tables of reduction to the epoch 1800 have been pub- 

 lished by Prof. Schumacher, 1847, p. 1395. On the benefits of complete 

 Star-catalogues, see the remarks of Sir John Herschel, Cat. of the British 

 Assoc., 1845, p. 4, S. 10. Compare also, respecting Missing Stars, Schu- 

 macher, Astr. Nachr., No. 624, and Bode's Jahrb.for 1817, S. 249. 



( 185 ) p. 97. Memoirs of the Royal Astron. Soc., Vol. xiii. 1843, pp. 33 

 and 168. 



( 186 ) p. 97. Bessel, Fundamenta Astronomise pro anno 1755, deducta ex 

 observationibus viri incomparabilis James Bradley in Specula astronomica 

 Grenovicensi, 1818. (Compare also Bessel, Tabulse Regiomoutanse reduc- 

 tionum observationum astronomiearum ab anno 1750 usque ad annum 1850 

 computatse, 1830.) 



( 18T ) p. 97. I compress into a note a brief list of Star-Catalogues contain- 

 ing lesser masses, or a smaller number of positions, adding the name of the 

 observer, and the number of the determinations of place. Lacaille (who 

 observed for barely ten months in 1751 and 1752, and with a magnifying 

 power of only eight times), 9766 southern stars to the 7th magnitude inclu- 

 sive, reduced to the year 1750 by Henderson ; Tobias Mayer, 998 stars for 

 1756; Flamsteed, originally 2866, but augmented by Baily's care by 564 

 additional (Mem. of the Astr. Soc. Vol. iv. p. 129164); Bradley, 3222, 

 reduced by Bessel to the year 1755; Pond, 1112; Piazzi, 7646 stars for 

 1800; Groombridge, 4243, mostly circumpolar stars, for 1810; Brisbane 

 and Riimker, 7385 southern stars, observed in New Holland in the years 

 18221828 ; Airy, 2156 stars, reduced to the year 1845 ; Riimker, 12,000, 

 on the Hamburg horizon ; Argelander (Cat. of Abo), 560 ; Taylor (Ma- 

 dras), 11015. The British Association Catalogue, 1845, reduced under Mr. 

 Baily's superintendence, contains 8377 stars, from the 1st magnitude to the 

 7i. For the most southern stars, we have besides, the rich registers of 

 Henderson, Fallows, Maclear, and Johnson at St. Helena. 



