The French expedition turned out to be particularly unlucky, and perhaps the most unfortunate was Guillaume le Gentil, who set out for Pondicherry, a French possession in India.
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One of his interesting findings was that the duration of the lunar eclipse of 30 August 1765 was predicted by a Tamil astronomer, based on the computation of the size and extent of the earth-shadow (going back to Aryabhata, 5th century), and was found short by 41 seconds, whereas the charts of Tobias Mayer were long by 68 seconds.
Guillaume Apollinaire | Guillaume Dufay | Guillaume Brahimi | Guillaume de Machaut | Guillaume-Chrétien de Lamoignon de Malesherbes | Robert Guillaume | Guillaume | Toussaint-Guillaume Picquet de la Motte | Guillaume Thomas François Raynal | Guillaume Lejean | Arnaud Guillaume de Barbazan | Alfred Guillaume Gabriel, Count D'Orsay | Port-Gentil | Pierre Guillaume | Louis Augustin Guillaume Bosc | Jean Guillaume Bruguière | Jean Guillaume Audinet-Serville | Jean-Baptiste Claude Eugène Guillaume | Guillaume Groen van Prinsterer | Guillaume Grandidier | Guillaume Dupuytren | Guillaume Dubois | Guillaume du Bellay | Guillaume Depardieu | Guillaume de Nogaret | Guillaume Dasquié | Guillaume Couillard | Guillaume Canet | Guillaume Bigot | Guillaume-Antoine Olivier |