ured Concentric Rings, and other
Appearances 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
Coloured Concentric Rings between Object-glasses, and other
Appearances of a similar Nature.

1811. _Phil. Trans._, vol. ci.--Astronomical Observations relating
to the Construction of the Heavens, arranged for the Purpose of a
critical 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
Remarks 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
Nebulous Part; arranged for the Purpose of a critical Examination.

1815. _Phil. Trans._, vol. cv.--A Series of Observations of the
Satellites of the Georgian Planet, including a Passage through the
Node of their Orbits; with an Introductory Account of the
Telescopic Apparatus 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
Experiments tending to investigate the Local Arrangement of the
Celestial Bodies in Space, and to determine the Extent and
Condition of the Milky Way.

1818. _Phil. Trans._, vol. cviii.--Astronomical Observations and
Experiments selected for the Purpose of ascertaining the relative
Distances of Clusters of Stars, and of investigating how far the
Power of Telescopes may be expected to reach into Space, when
directed to ambiguous Celestial Objects.

1822. _Memoirs of the Astronomical Society of London._--On the
Positions of 145 new Double Stars.

The chronological and detailed analysis of so many labours would throw
us into numerous repetitions. A systematic order will be preferable; it
will more distinctly fix the eminent place that Herschel will never
cease to occupy in the small group of our contemporary men of genius,
whilst his name will reecho to the most distant posterity. The variety
and splendour of Herschel's labours vie with their extent. Th