Davis, stellar parallaxes, [417]
Dawes, prominences in 1851[ 70];
Saturn's dusky ring,[ 86]
a star
[Pg 475] behind a comet, [106]
solar observations, [143] [164]
observations and drawings of Mars, [276] [278] [280]
satellite-transits on Jupiter, [291] [292]
De Ball, markings on Mercury, [248]
Delambre, Greenwich observations, [3];
solar rotation, [146]
light-equation, [231]
De la Roche, Newton's law of cooling, [217]
De la Rue, celestial photography, [152] [153] [268];
solar investigations, [154]
expedition to Spain, [166] [167]
De la Tour, experiments on liquefaction, [151]
Delaunay, tidal friction, [271] [272];
Coudé telescope, [436]
Delisle, diffraction theory of corona,[ 67];
transits of Venus, [233] [239]
Dembowski, double star measurements, [418]