CATALOGUE. PRACTICAL ASTRONOMY. 



355 



Numerous observations of the transit of 6 June 

 1761. Pii.tr. 1761. 



Zanotti. C. Bon. VII. 0. 1. 



Montucia and Lalande. IV. 126. 



Wollaston on corrections for horizontal re- 

 fraction. Ph. tr. 1803. 1. 



Aberration of Light. See Physical Optics. 



Parallax in general. 

 Mackay. Enc. Br. Art. Parallax. 



Dip. 

 Huddart on the dip. Ph. tr. Nich. I. 145. 



Gilb. III. 257. 

 Wollaston on the dip. Ph. tr. 1803. 1. 

 E. Walker on the dip. Nich. VII. 62. 



Azimuths and Altitudes in general. 



BernoulH on three observations of altitudes. 

 C. Petr. IV. 89. 

 • Mayer on observations of altitudes. C. Petr. 

 V. 33. 

 ■ Lax on observations of two altitudes. Ph. tr. 

 1799. 74, 

 An artificial horizon of mercury covered vfith 

 gauze. Burrows. As. Res. I. 



Observations of the Stars. 



See Astronomical Telescopes and Micro- 

 meters. 



Smeaton on observing by comparison with 

 two stars. Ph. tr. 1768. 170. 



Corrections. 

 Aberration. 



Bradley on a newly discovered motion of the 



stars. Ph. tr. 1728. 637. 

 Clairaut on the aberration of the stars. A. P. 



1737. 205. H. 76. 

 Winsheim on aberration. N. C. Petr. I. 446. 



Annual Parallax. 



Hooke's attempt to prove the motion of the 

 earth. 4. 1679- Lect. Cutl. 

 Ace. Ph. tr. 1679. IX. 12. Cassini's ap- 

 probation. 90. 



Wallis's proposal respecting the annual pa- 

 rallax. Ph. tr. 1693. XVII. 844. 

 Suggests an observation on two neighbouring stars, as the 



second horse of the wain, and its rider. 



Halley on Cassini's proposal to find the pa- 

 rallax of Sirius. Ph. tr. 1720. XXII. 1. 



Places of the Stars. 



Lahire on finding the difference of declina- 

 tion. A. P. 1701. 101. H. 91. 



Maraldi on finding declinations without re- 

 fraction. A. P. 1736. 43. H. 85. 



Maupertuis on finding the declination of the 

 stars. A. P. 1736. 375. 



Wollaston on describing the positions of the 

 fixed stars. Ph. tr. 1784. 181. 

 By drawing little maps from estimation. 



Altitudes of the Stars. 



Mairan on finding the latitude without re- 

 fraction. A. P. 1736. 147. H. 87. 



Aubert on equal altitudes. Ph. tr. 1776. 92. 

 Of a star near the pole. 



K'astner on observations of the pole star. 

 Commentat. Gott. 1791- XXI. M. 1. 



Observations of the Sun. 



Parallax, and Modes of determining it. 



For Irradiation and Refraction see Physical 

 Optics. 



Halley de parallaxi solis ope Veneris deter- 

 minanda. Ph. tr. 1716. XXIX. 454. 



Boscovich on the approaching transit of Ve- 

 nus. Ph. tr. 1760. 865. 



