LXIV. A series of astronomical observations made at the observatory of the marine at Paris, to wit, 1°. Observations of Jupiter's satellites in the years 1767 and 1768. 2°. Observations on the shadows of Jupiter's satellites. 3°. On the variation of the belts on the disc of that planet. 4°. Observation of a spot on the disc the 3d satellite.

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LXIV. A series of astronomical observations made at the observatory of the marine at Paris, to wit, 1°. Observations of Jupiter's satellites in the years 1767 and 1768. 2°. Observations on the shadows of Jupiter's satellites. 3°. On the variation of the belts on the disc of that planet. 4°. Observation of a spot on the disc the 3d satellite. 5°. Observation of the belts of Saturn. 6°. Observation of the Moon's passage over the Pleiades, in 1767. 7°. Observation of a partial eclipse of the Moon, January 3, and of a total one, December 23, 1768. 8° Observations of two auroræ boreales, August 6, and December 5, of the same year. Observations of eclipses of Jupiter's satellites, made at Paris, in the observatory of the marine, in the year 1767, with an excellent Gregorian telescope of 30 inches focus, the great speculum 6 inches diameter, and the magnifying power 104 times.