ADOKESS. Ixxxi 



the influence they have on the movements of our world and on each other, 

 and to discover the substances of which they are composed ; may we not 

 fairly hope that similar methods of reseai-ch to those which have taught us so 

 much may give our race further information, until problems relating not 

 only to remote worlds, but possibly to organic and sentient beings which may 

 inhabit them, problems which it might now seem wildly visionary to enunciate, 

 may be solved by progressive improvements in the modes of applying obser- 

 vation and experiment, induction and deduction ? 



NOTES AND REPEEENCES. 

 Page. 



hi. Herschel, Sir J. Astronomical Observations at the Cape of Good Hope, 

 1847. 

 RossE^ Earl of. Observations on the Nebulae, Phil. Trans. 1850, p. 499. 



BltAYLEY. ^ "" " "* ■ "' "■ 



I860, p. 



SoRBY. rijidem, 



Ivii. Olmsted. SUliman's Journal, July 1834, p." 138. The first suggestion ol 

 a perspective vanishing-point for meteors seems to be due to Prof. Thom- 

 son of Nashville. 



Herschel, ^\xexander. Eeports of the Meteor Committee of the British 

 Association. 



Leverrier. Intramercurial Planets. Comptes Rendus, Paris. 1861, p. 

 1109. > > > i^ 



Daubree. Comptes Rendus, Paris, 1866. Bulletin de la Soci6t^ Gt5olo- 

 gique de France, Mars 1860. 

 Iviii. PLiJCKER. Variation of Spectrum Lines with Temperature, Phil. Trans 

 1865, p. 6. 

 lix. HuGGEsrs and Miller. Spectra of Fixed Stars, Phil. Trans. 1864, p. 41.3. 

 Spectrimi of Temporary Star, Proc. Roy. Soc. No. 84, 1866. 

 HuGGiNS. Spectrum of Comet I., 1866, Proc. Roy. Soc. No. 80, 1866. 

 Ix. Chacobnac on the Moon. Comptes Rendus, Paris, June 1866, p. 1406, 

 &c. 

 Ixii. RuMFOBD. Heat of Friction, Phil. Trans. 1798, p. 80. 

 Davy'. Ibidem. West of England Contributions, p. 18. 

 Joule. Phil. Mag. 1843 ; PhU. Trans. 1850. 

 Lxiii. Sabine. Magnetism and Solar Spots, Proc. Roy. Soc. 1865, p. 491. 

 Airy. On Solar Magnetism, Phil. Trans. 1863, pp. 313 & 646. ' 

 Chambers. Idem, Phil. Trans. 1863, pp. 514-516. 

 Mayer. Friction of Tidal Wave. See his papers collected and translated 



by Youman, New York, 1865. 

 Delaunay. Acceleration of Moon's Motion, Comptes Rendus, Paris 

 December 1865, January 1866. ' 



Airy. Idem, Notices Roy. Ast. Soc. April 13, 1866. 

 Carrington. Observations on Spots on the Sun, 1863. 

 De la Rue, Stewart, and Loewy. Idem, 1865. 



Faye. On the Dynamic Theory of Solar Heat, Comptes Rendus, Paris 

 October 1862, p. 564. Constitution of Sun, Motion of Sun Spots, &c.' 

 Comptes Rendus, Paris, January 1866, &c. ' 



Ixiv. Struve. Etudes d'Astronomie Stellaire, 1847. The passage in the text 

 is so brief as to be obscure. See the idea elaborated, CoiTelation of Phy- 

 sical Forces, 1867, p. 187. ^ 

 See Con-. Phys. Forces, p. 84. 



Rerthelot. Formate of Potash, Institut, 1864, p. 332. 

 Ixv. Tyndall. On Radiant Heat, Phil. Mag. November 1864 ; Phil. Trans. 

 1866. 

 Graham. Dialysis of Air, Phil. Trans. 1866, p. 399. 

 Wilde. Increase of Magneto-electric Force, Proc. Roy. Soc. April 1866 

 p. 107. ' 



1866. f 



