=Bougainville, Louis Antoine, Comte de= (1729-1811). Born in Paris. Educated for his father's profession of notary; and soon obtained recognition as an advocate in the Parliament of Paris. As a student displayed a remarkable talent for mathematics, and at the age of twenty-two wrote the first volume of a treatise on the Integral Calculus. His mathematical work recognized by the Royal Society in electing him to a fellowship. Joined the army in 1755, and the next year came to Canada as Montcalm's aide-de-camp. Played an important part in the siege of Quebec, and wrote an elaborate journal of the campaign, much of which appears to have been incorporated in Montcalm's _Journal_, published by Abbé Casgrain. Returned to France in 1760, and after serving in Germany, joined the navy. From 1766 to 1769 made a voyage around the world; served in the West Indies during the Revolutionary War, and commanded the van of the French fleet in the action off Chesapeake Bay. Retired from active service, 1790; nominated by Napoleon to the Senate, and raised to the nobility. =Index=: =WM= Aide-de-camp to Montcalm, 1; despatched to France to represent desperate state of colony, 62; commands Grenadiers along Beauport shore, 85; incurs Bigot's hostility, 88; ordered to protect country west of Quebec, 151, 158; interview with Montcalm at Beauport, 160; Vaudreuil writes that safety of colony is in his hands, 161; duped by Wolfe's strategy, 177; criticized by Chevalier Johnstone, 177; his promotion due to court favour, 177; disregards instructions of governor by changing commander at Le Foulon, 178; great reliance placed on him, 178; his failure to reinforce post at the Foulon, 178, 184; his failure to follow British fleet down from Cap Rouge, 184; held responsible for disaster, 210; his delay at Sillery, 211; arrives after battle, 222; his letter to Ramezay, regarding provisions, 226; holds his position at Cap Rouge while rest of army retreats, 229; on march to Quebec, hears of capitulation, 234; replaces Lusignan at Ile-aux-Noix, 245; congratulates Lévis on victory of Ste. Foy, 267. =Bib.=: Works: _Traité du Calcul Intégral_; _Voyage autour du Monde_; _Essai Historique sur les Navigations Anciennes et Modernes_ (Acad. des Sciences Morales et Pol., Vol. I); _Notice Historique sur les Sauvages de l'Amerique Septentrionale_ (_ibid._, Vol. III). His letters are printed in Doughty, _Siege of Quebec_; and his manuscript journals are in the Canadian Archives. _See also_ De Kerallain, _La Jeunesse de Bougainville_; Michaud, _Biog. Univ._; Larousse, _Grande Dict. Univ._; Casgrain, _Montcalm et Lévis_; Parkman, _Montcalm and Wolfe_; Wood, _The Fight for Canada_; Hart, _The Fall of New France, 1755-1760_. =Boulay, Angelique Louise Talon du.= =WM= Wife of Montcalm, 5; her grief at his departure for Canada, 8. =Boulduc.= =F= Prosecutor of Prévoté, dismissed, 138.