CHRONOLOGICAL TABLE OF HIS MEMOIRS. 269 



tinguish the real from the spurious Diameters of Celestial and Terres 

 trial Objects : with an Application of the Result of these Experiments to 

 a Series of Observations on the Nature and Magnitude of Mr. Harding s 

 lately discovered Star. On the Direction and Velocity of the Motion 

 of the Sun and Solar System. Observation on the singular Figure of 

 the Planet Saturn. 



1806. Phil. Trans., vol. xcvi. On the Quantity and Velocity of the 

 Solar Motion. Observations on the Figure, the Climate, and the At 

 mosphere of Saturn and its Ring. 



1807. Phil. Trans., vol. xcvii. Experiments for investigating the 

 Cause of the Coloured Concentric Rings, discovered by Sir Isaac 

 Newton between two Object-glasses laid one upon another. Obsei-va- 

 tions on the Nature of the new celestial Body discovered by Dr. 

 Olbers, and of the Comet which was expected to appear last January 

 in its Return from the Sun. 



1808. Phil. Trans., vol. xcviii. Observations of a Comet, made with 

 a view to investigate its Magnitude, and the Nature of its Illumination. 

 To which is added, an Account of a new Irregularity lately perceived 

 in the Apparent Figure of the Planet Saturn. 



1809. Phil. Trans., vol. xcix. Continuation of Experiments for in 

 vestigating the Cause of Coloured Concentric Rings, and other Ap 

 pearances of a similar Nature. 



1810. Phil. Trans., vol. c. Supplement to the First and Second 

 Part of the Paper of Experiments for investigating the Cause of Col 

 oured Concentric Rings between Object-glasses, and other Appear 

 ances of a similar Nature. 



1811. Phil. Trans., vol. ci. Astronomical Observations relating to 

 the Construction of the Heavens, arranged for the Purpose of a criti 

 cal Examination, the Result of which appears to throw some new 

 Light upon the Organization of the Celestial Bodies. 



1812. Phil. Trans., vol. cii. Observations of a Comet, with Re 

 marks on the Construction of its different Parts. Observations of a 

 Second Comet, with Remarks on its Construction. 



1814. Phil. Trans., vol. civ. Astronomical Observations relating to 

 the Sidereal Part of the Heavens, and its Connection with the Nebu 

 lous Part; arranged for the Purpose of a critical Examination. 



1815. PMl. Trans., vol. cv. A Series of Observations of the Satel 

 lites of the Georgian Planet, including a Passage through the Node of 

 their Orbits ; with an Introductory Account of the Telescopic Appa 

 ratus that has been used on this Occasion, and a final Exposition of 

 some calculated Particulars deduced from the Observations. 



1817. Phil. Trans., vol. cvii. Astronomical Observations and Ex 

 periments tending to investigate the Local Arrangement of the Celcs- 



